ABNT_Num.XSL

<?xml version="1.0" encoding="utf-8"?>

<!-- 
     Stylesheet for Microsoft Word 2007 Bibliography formatting.
     
     Author(s): Yves Dhondt (yves.dhondt@gmail.com)
               
     Copyright: Copyright (c) 2008 Yves Dhondt

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                IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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  -->

<xsl:stylesheet version="1.0" xmlns:b="http://schemas.openxmlformats.org/officeDocument/2006/bibliography" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt">

  <!-- Variable containing all necessary data for a certain style of bibliography. -->
  <xsl:variable name="data">
    <general>
      <stylename>ABNT NBR 6023:2002 - Numerical</stylename>
      <version>2009.05.23</version>
      <author>Yves Dhondt (yves.dhondt@gmail.com)</author>
      <description>An implementation of the ABNT NBR 6023/2002 style.</description>
      <URL>http://bibliography.codeplex.com/updateStyle?id=ABNT1</URL>
      <comments>
      </comments>
      <display_errors>yes</display_errors>
      <citation_as_link>no</citation_as_link>
    </general>
    <importantfields>
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        <overflow> et al.</overflow>
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        <overflow>, et al.</overflow>
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        <separator_before_last> e </separator_before_last>
        <max_number_of_persons_to_display>3</max_number_of_persons_to_display>
        <number_of_persons_to_display_if_more_than_max>2</number_of_persons_to_display_if_more_than_max>
        <overflow>, &lt;i&gt;et al.&lt;/i&gt;</overflow>
        <single_suffix></single_suffix>
        <multi_suffix></multi_suffix>
      </list>
      <list name="compilerAsAuthor" id="6">
        <single_prefix></single_prefix>
        <multi_prefix></multi_prefix>
        <corporate>{%Corporate:u%}</corporate>
        <first_person>{%Last:u%}{, %First:adpsu|Middle:adpsu%{ %Middle:adpsu%}}</first_person>
        <other_persons>{%Last:u%}{, %First:adpsu|Middle:adpsu%{ %Middle:adpsu%}}</other_persons>
        <separator_between_if_two>; </separator_between_if_two>
        <separator_between_if_more_than_two>; </separator_between_if_more_than_two>
        <separator_before_last>; </separator_before_last>
        <max_number_of_persons_to_display>3</max_number_of_persons_to_display>
        <number_of_persons_to_display_if_more_than_max>1</number_of_persons_to_display_if_more_than_max>
        <overflow> et al.</overflow>
        <single_suffix> (Comp.)</single_suffix>
        <multi_suffix> (Comps.)</multi_suffix>
      </list>
      <list name="performer" id="7">
        <single_prefix></single_prefix>
        <multi_prefix></multi_prefix>
        <corporate>{%Corporate%}</corporate>
        <first_person>{%First|Middle% }{%Middle% }{%Last%}</first_person>
        <other_persons>{%First|Middle% }{%Middle% }{%Last%}</other_persons>
        <separator_between_if_two> e </separator_between_if_two>
        <separator_between_if_more_than_two>; </separator_between_if_more_than_two>
        <separator_before_last> e </separator_before_last>
        <max_number_of_persons_to_display>10</max_number_of_persons_to_display>
        <number_of_persons_to_display_if_more_than_max>10</number_of_persons_to_display_if_more_than_max>
        <overflow> e outros</overflow>
        <single_suffix></single_suffix>
        <multi_suffix></multi_suffix>
      </list>
    </namelists>
    <strings>
      <months>
        <month number="1">jan.</month>
        <month number="2">fev.</month>
        <month number="3">mar.</month>
        <month number="4">abr.</month>
        <month number="5">maio</month>
        <month number="6">jun.</month>
        <month number="7">jul.</month>
        <month number="8">ago.</month>
        <month number="9">set.</month>
        <month number="10">out.</month>
        <month number="11">nov.</month>
        <month number="12">dez.</month>
      </months>
    </strings>
    <extensions>
      <source type="ArticleInAPeriodical">
        <yearsuffix>{%Author:1|Title%}{, %Year%}</yearsuffix>
      </source>
      <source type="Book">
        <yearsuffix>{%Author:1|Editor:1|Compiler:1|Title%}{, %Year%}</yearsuffix>
      </source>
      <source type="BookSection">
        <yearsuffix>{%Author:1|BookAuthor:1|Title%}{, %Year%}</yearsuffix>
      </source>
      <source type="ConferenceProceedings">
        <yearsuffix>{%Author:1|Title%}{, %Year%}</yearsuffix>
      </source>
      <source type="Film">
        <yearsuffix>{%Title%}{, %Year%}</yearsuffix>
      </source>
      <source type="InternetSite">
        <yearsuffix>{%Author:1|Title%}{, %Year%}</yearsuffix>
      </source>
      <source type="JournalArticle">
        <yearsuffix>{%Author:1|Title%}{, %Year%}</yearsuffix>
      </source>
      <source type="Patent">
        <yearsuffix>{%Inventor:1|Title%}{, %Year%}</yearsuffix>
      </source>
      <source type="Report">
        <yearsuffix>{%Author:1|Title%}{, %Year%}</yearsuffix>
      </source>
      <source type="SoundRecording">
        <yearsuffix>{%Composer:1|Performer:1|Title|AlbumTitle%}{, %Year%}</yearsuffix>
      </source>
      <source type="Standard">
        <yearsuffix>{%Author:1|Title%}{, %Year%}</yearsuffix>
      </source>
      <source type="Thesis">
        <yearsuffix>{%Author:1|Title%}{, %Year%}</yearsuffix>
      </source>
    </extensions>
    <overrides>
      <titles>
        <delimeter>:</delimeter>
        <articles>-A-THE-AN-OS-</articles>
      </titles>
    </overrides>    
  </xsl:variable>

  <!-- Indicates that all output will be in the HTML format. -->
  <xsl:output method="html" encoding="utf-8"/>

  <!-- Handle the different types of input documents. -->
  <xsl:template match="/">

    <xsl:choose>
      <!-- Gets the name of the style as it will be displayed in Word 2007 / 2010. -->
      <xsl:when test="b:StyleName">
        <xsl:value-of select="msxsl:node-set($data)/general/stylename"/>
      </xsl:when>

      <!-- Gets the version information for the style in Word 2007 / 2010. -->
      <xsl:when test="b:Version">
        <xsl:value-of select="msxsl:node-set($data)/general/version"/>
      </xsl:when>

      <!-- Sets a version number in Word 2013. -->
      <xsl:when test="b:XslVersion">
        <xsl:choose>
          <xsl:when test="msxsl:node-set($data)/general/version2013">
            <xsl:value-of select="msxsl:node-set($data)/general/version2013"/>
          </xsl:when>
          <xsl:otherwise>
            <!-- Fallback method : use a dummy version number of 1. -->
            <xsl:text>1</xsl:text>
          </xsl:otherwise>
        </xsl:choose>
      </xsl:when>

      <!-- Set the name of the style in Word 2013. -->
      <xsl:when test="b:StyleNameLocalized">
        <xsl:value-of select="msxsl:node-set($data)/general/stylename"/>
      </xsl:when>

      <!-- Gets a description of the style. (Word 2008 or later) -->
      <xsl:when test="b:Description">
        <xsl:value-of select="msxsl:node-set($data)/general/description"/>
      </xsl:when>

      <!-- Gets the URL for updates. (Word 2008 or later) -->
      <xsl:when test="b:UpdateURL">
        <xsl:value-of select="msxsl:node-set($data)/general/URL"/>
      </xsl:when>

      <!-- Retrieve the most important fields for a certain type of citation. -->
      <xsl:when test="b:GetImportantFields">
        <xsl:variable name="type" select="b:GetImportantFields/b:SourceType"/>
        <b:ImportantFields>
          <xsl:copy-of select="msxsl:node-set($data)/importantfields/source[@type = $type]/*"/>
        </b:ImportantFields>
      </xsl:when>

      <!-- Formats a citation for display. -->
      <xsl:when test="b:Citation">
        <xsl:choose>
          <xsl:when test="msxsl:node-set($data)/citation">
            <xsl:call-template name="format-citation"/>
          </xsl:when>
          <xsl:otherwise>
            <!-- Fallback method. -->
            <xsl:call-template name="format-footnote-citation"/>
          </xsl:otherwise>
        </xsl:choose>
      </xsl:when>

      <!-- Formats a footnote citation for display (Word 2008 or later). -->
      <xsl:when test="b:FootnoteCitation">
        <xsl:choose>
          <xsl:when test="msxsl:node-set($data)/footnotecitation">
            <xsl:call-template name="format-footnote-citation"/>
          </xsl:when>
          <xsl:otherwise>
            <!-- Fallback method. -->
            <xsl:call-template name="format-citation"/>
          </xsl:otherwise>
        </xsl:choose>
      </xsl:when>

      <!-- Formats a bibliography for display. -->
      <xsl:when test="b:Bibliography">
        <xsl:call-template name="format-bibliography"/>
      </xsl:when>

      <!-- Add a b:BibOrder element to b:Source elements (not used by Word, BibWord specific!). -->
      <xsl:when test="b:BibWord">
        <xsl:call-template name="bibword-extensions"/>
      </xsl:when>
    </xsl:choose>

  </xsl:template>

  <!-- Formats the citation. -->
  <xsl:template name="format-citation">

    <!-- Generate an XML node-set from the formatting data. -->
    <xsl:variable name="params" select="msxsl:node-set($data)"/>

    <html xmlns="http://www.w3.org/TR/REC-html40">
      <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
      </head>
      <body>
        <p>

          <!-- Display the open bracket if this is the first citation. -->
          <xsl:if test="/b:Citation/b:FirstAuthor">
            <xsl:value-of select="$params/citation/openbracket" disable-output-escaping="yes"/>
          </xsl:if>

          <!-- Not handled: MinAuthors, SameAuthors, RepeatedAuthor. -->
          <xsl:variable name="citation">
            <!-- Get the format string. -->
            <xsl:variable name="format">
              <xsl:variable name="type" select="/b:Citation/b:Source/b:Type"/>
              <xsl:variable name="sourcetype" select="/b:Citation/b:Source/b:SourceType"/>

              <xsl:choose>
                <!-- If there is no source type, its a placeholder. -->
                <xsl:when test="string-length($sourcetype) = 0 and string-length(msxsl:node-set($data)/citation/source[@type = 'Placeholder']/format) > 0">
                  <xsl:value-of select="msxsl:node-set($data)/citation/source[@type = 'Placeholder']/format"/>
                </xsl:when>
                <!-- Go for the type element if available. -->
                <xsl:when test="string-length($type) > 0 and string-length(msxsl:node-set($data)/citation/source[@type = $type]/format) > 0 ">
                  <xsl:value-of select="msxsl:node-set($data)/citation/source[@type = $type]/format"/>
                </xsl:when>
                <!-- Else go for the source type element if available. -->
                <xsl:when test="string-length(msxsl:node-set($data)/citation/source[@type = $sourcetype]/format) > 0 ">
                  <xsl:value-of select="msxsl:node-set($data)/citation/source[@type = $sourcetype]/format"/>
                </xsl:when>
                <!-- Else display error message. -->
                <xsl:otherwise>
                  <xsl:if test="msxsl:node-set($data)/general/display_errors = 'yes'">
                    <xsl:text>&lt;b&gt;Unsupported </xsl:text>
                    <xsl:if test="string-length($type) > 0">
                      <xsl:text>type (</xsl:text>
                      <xsl:value-of select="$type"/>
                      <xsl:text>) and </xsl:text>
                    </xsl:if>
                    <xsl:text>source type (</xsl:text>
                    <xsl:value-of select="$sourcetype"/>
                    <xsl:text>) for source </xsl:text>
                    <xsl:value-of select="/b:Citation/b:Source/b:Tag"/>
                    <xsl:text>.&lt;/b&gt;</xsl:text>
                  </xsl:if>
                </xsl:otherwise>
              </xsl:choose>

            </xsl:variable>

            <!-- Extend the source. -->
            <xsl:variable name="extendedSource">
              <b:Source>
                <xsl:copy-of select="/b:Citation/b:Source/*"/>
                <!-- For processing the \f parameter. -->
                <b:CitationPrefix>
                  <xsl:value-of select="/b:Citation/b:PagePrefix"/>
                </b:CitationPrefix>
                <!-- For processing the \s parameter. -->
                <b:CitationSuffix>
                  <xsl:value-of select="/b:Citation/b:PageSuffix"/>
                </b:CitationSuffix>
                <!-- For processing the \p parameter. -->
                <b:CitationPages>
                  <xsl:value-of select="/b:Citation/b:Pages"/>
                </b:CitationPages>
                <!-- For processing the \v parameter. -->
                <b:CitationVolume>
                  <xsl:value-of select="/b:Citation/b:Volume"/>
                </b:CitationVolume>
              </b:Source>
            </xsl:variable>

            <xsl:call-template name="format-source">
              <xsl:with-param name="format" select="$format"/>
              <xsl:with-param name="source" select="msxsl:node-set($extendedSource)/b:Source"/>
              <xsl:with-param name="disallowed">
                <!-- Do not display the authors of the work. -->
                <xsl:if test="/b:Citation/b:NoAuthor">
                  <xsl:value-of select="msxsl:node-set($data)/citation/noauthor"/>
                </xsl:if>
                <!-- Do not display the title of the work. -->
                <xsl:if test="/b:Citation/b:NoTitle">
                  <xsl:value-of select="msxsl:node-set($data)/citation/notitle"/>
                </xsl:if>
                <!-- Do not display the year the work was written or accessed in. -->
                <xsl:if test="/b:Citation/b:NoYear">
                  <xsl:value-of select="msxsl:node-set($data)/citation/noyear"/>
                </xsl:if>
              </xsl:with-param>
            </xsl:call-template>
          </xsl:variable>

          <xsl:choose>
            <xsl:when test="$params/general/citation_as_link = 'yes'">
              <a href="#{/b:Citation/b:Source/b:Tag}">
                <xsl:value-of select="$citation" disable-output-escaping="yes"/>
              </a>
            </xsl:when>
            <xsl:otherwise>
              <xsl:value-of select="$citation" disable-output-escaping="yes"/>
            </xsl:otherwise>
          </xsl:choose>

          <!-- end citation -->

          <!-- Display the group separator if this is not the last citation. -->
          <xsl:if test="not(/b:Citation/b:LastAuthor)">
            <xsl:value-of select="$params/citation/separator" disable-output-escaping="yes"/>
          </xsl:if>

          <!-- Display the close bracket if this is the last citation. -->
          <xsl:if test="/b:Citation/b:LastAuthor">
            <xsl:value-of select="$params/citation/closebracket" disable-output-escaping="yes"/>
          </xsl:if>

        </p>
      </body>
    </html>

  </xsl:template>

  <!-- Formats the footnote citation. -->
  <xsl:template name="format-footnote-citation">

    <!-- Generate an XML node-set from the formatting data. -->
    <xsl:variable name="params" select="msxsl:node-set($data)"/>

    <html xmlns="http://www.w3.org/TR/REC-html40">
      <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
      </head>
      <body>
        <p class="MsoBibliography">

          <!-- Display the open bracket if this is the first citation. -->
          <xsl:if test="/b:FootnoteCitation/b:FirstAuthor">
            <xsl:value-of select="$params/footnotecitation/openbracket" disable-output-escaping="yes"/>
          </xsl:if>

          <!-- Not handled: MinAuthors, SameAuthors, RepeatedAuthor. -->
          <xsl:variable name="citation">
            <!-- Get the format string. -->
            <xsl:variable name="format">
              <xsl:variable name="type" select="/b:FootnoteCitation/b:Source/b:Type"/>
              <xsl:variable name="sourcetype" select="/b:FootnoteCitation/b:Source/b:SourceType"/>

              <xsl:choose>
                <!-- If there is no source type, its a placeholder. -->
                <xsl:when test="string-length($sourcetype) = 0 and string-length(msxsl:node-set($data)/footnotecitation/source[@type = 'Placeholder']/format) > 0">
                  <xsl:value-of select="msxsl:node-set($data)/footnotecitation/source[@type = 'Placeholder']/format"/>
                </xsl:when>
                <!-- Go for the type element if available. -->
                <xsl:when test="string-length($type) > 0 and string-length(msxsl:node-set($data)/footnotecitation/source[@type = $type]/format) > 0 ">
                  <xsl:value-of select="msxsl:node-set($data)/footnotecitation/source[@type = $type]/format"/>
                </xsl:when>
                <!-- Else go for the source type element if available. -->
                <xsl:when test="string-length(msxsl:node-set($data)/footnotecitation/source[@type = $sourcetype]/format) > 0 ">
                  <xsl:value-of select="msxsl:node-set($data)/footnotecitation/source[@type = $sourcetype]/format"/>
                </xsl:when>
                <!-- Else display error message. -->
                <xsl:otherwise>
                  <xsl:if test="msxsl:node-set($data)/general/display_errors = 'yes'">
                    <xsl:text>&lt;b&gt;Unsupported </xsl:text>
                    <xsl:if test="string-length($type) > 0">
                      <xsl:text>type (</xsl:text>
                      <xsl:value-of select="$type"/>
                      <xsl:text>) and </xsl:text>
                    </xsl:if>
                    <xsl:text>source type (</xsl:text>
                    <xsl:value-of select="$sourcetype"/>
                    <xsl:text>) for source </xsl:text>
                    <xsl:value-of select="/b:FootnoteCitation/b:Source/b:Tag"/>
                    <xsl:text>.&lt;/b&gt;</xsl:text>
                  </xsl:if>
                </xsl:otherwise>
              </xsl:choose>

            </xsl:variable>

            <!-- Extend the source. -->
            <xsl:variable name="extendedSource">
              <b:Source>
                <xsl:copy-of select="/b:FootnoteCitation/b:Source/*"/>
                <!-- For processing the \f parameter. -->
                <b:FootnoteCitationPrefix>
                  <xsl:value-of select="/b:FootnoteCitation/b:PagePrefix"/>
                </b:FootnoteCitationPrefix>
                <!-- For processing the \s parameter. -->
                <b:FootnoteCitationSuffix>
                  <xsl:value-of select="/b:FootnoteCitation/b:PageSuffix"/>
                </b:FootnoteCitationSuffix>
                <!-- For processing the \p parameter. -->
                <b:FootnoteCitationPages>
                  <xsl:value-of select="/b:FootnoteCitation/b:Pages"/>
                </b:FootnoteCitationPages>
                <!-- For processing the \v parameter. -->
                <b:FootnoteCitationVolume>
                  <xsl:value-of select="/b:FootnoteCitation/b:Volume"/>
                </b:FootnoteCitationVolume>
              </b:Source>
            </xsl:variable>

            <xsl:call-template name="format-source">
              <xsl:with-param name="format" select="$format"/>
              <xsl:with-param name="source" select="msxsl:node-set($extendedSource)/b:Source"/>
              <xsl:with-param name="disallowed">
                <!-- Do not display the authors of the work. -->
                <xsl:if test="/b:FootnoteCitation/b:NoAuthor">
                  <xsl:value-of select="msxsl:node-set($data)/citation/noauthor"/>
                </xsl:if>
                <!-- Do not display the title of the work. -->
                <xsl:if test="/b:FootnoteCitation/b:NoTitle">
                  <xsl:value-of select="msxsl:node-set($data)/citation/notitle"/>
                </xsl:if>
                <!-- Do not display the year the work was written or accessed in. -->
                <xsl:if test="/b:FootnoteCitation/b:NoYear">
                  <xsl:value-of select="msxsl:node-set($data)/citation/noyear"/>
                </xsl:if>
              </xsl:with-param>
            </xsl:call-template>
          </xsl:variable>

          <xsl:value-of select="$citation" disable-output-escaping="yes"/>
          <!-- end citation -->

          <!-- Display the group separator if this is not the last citation. -->
          <xsl:if test="not(/b:FootnoteCitation/b:LastAuthor)">
            <xsl:value-of select="$params/citation/separator" disable-output-escaping="yes"/>
          </xsl:if>

          <!-- Display the close bracket if this is the last citation. -->
          <xsl:if test="/b:FootnoteCitation/b:LastAuthor">
            <xsl:value-of select="$params/citation/closebracket" disable-output-escaping="yes"/>
          </xsl:if>

        </p>
      </body>
    </html>

  </xsl:template>

  <!-- Formats the bibliography. -->
  <xsl:template name="format-bibliography">

    <!-- Extends the b:Source elements of the b:Bibliography element with a b:SortKey. -->
    <xsl:variable name="extendedBib">
      <!-- Create a b:Bibliography element. -->
      <b:Bibliography>
        <!-- Extend all the b:Source elements with a sortkey. -->
        <xsl:for-each select="/b:Bibliography/b:Source">
          <b:Source>
            <!-- Copy the content of the b:Source. -->
            <xsl:copy-of select="./*"/>

            <!-- Add a sorting key. -->
            <xsl:call-template name="create-sortkey">
              <xsl:with-param name="source" select="."/>
            </xsl:call-template>
          </b:Source>
        </xsl:for-each>

        <!-- With the exception of the b:Source elements, copy all elements (not really used by the stylesheets). -->
        <!--<xsl:for-each select="/b:Bibliography/*">
          <xsl:if test="local-name() != 'Source'">
            <xsl:element name="{name()}" namespace="{namespace-uri()}">
              <xsl:value-of select="."/>
            </xsl:element>
          </xsl:if>
        </xsl:for-each>-->

      </b:Bibliography>
    </xsl:variable>

    <html xmlns="http://www.w3.org/TR/REC-html40">
      <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <style>
          p.MsoBibliography
        </style>
      </head>
      <body>

        <xsl:choose>
          <!-- If there is more than one column, use a table layout. -->
          <xsl:when test="msxsl:node-set($data)/bibliography/columns > 1">
            <xsl:call-template name="format-bibliography-as-table">
              <xsl:with-param name="bibNodeSet" select="msxsl:node-set($extendedBib)"/>
            </xsl:call-template>
          </xsl:when>
          <!-- Otherwise use a paragraph layout. -->
          <xsl:otherwise>
            <xsl:call-template name="format-bibliography-as-paragraphs">
              <xsl:with-param name="bibNodeSet" select="msxsl:node-set($extendedBib)"/>
            </xsl:call-template>
          </xsl:otherwise>
        </xsl:choose>

      </body>
    </html>

  </xsl:template>

  <!-- Formats a bibliography as a series of paragraphs. -->
  <xsl:template name="format-bibliography-as-paragraphs">
    <xsl:param name="bibNodeSet"/>

    <xsl:for-each select="$bibNodeSet/b:Bibliography/b:Source">
      <xsl:sort select="b:SortKey" data-type="text"/>

      <p class="MsoBibliography">
        <!-- Get the format string. -->
        <xsl:variable name="format">
          <xsl:variable name="type" select="./b:Type"/>
          <xsl:variable name="sourcetype" select="./b:SourceType"/>

          <xsl:choose>
            <!-- If there is no source type, its a placeholder. -->
            <xsl:when test="string-length($sourcetype) = 0 and string-length(msxsl:node-set($data)/bibliography/source[@type = 'Placeholder']/column[@id = '1']/format) > 0">
              <xsl:value-of select="msxsl:node-set($data)/bibliography/source[@type = 'Placeholder']/column[@id = '1']/format"/>
            </xsl:when>
            <!-- Go for the type element if available. -->
            <xsl:when test="string-length($type) > 0 and string-length(msxsl:node-set($data)/bibliography/source[@type = $type]/column[@id = '1']/format) > 0 ">
              <xsl:value-of select="msxsl:node-set($data)/bibliography/source[@type = $type]/column[@id = '1']/format"/>
            </xsl:when>
            <!-- Else go for the source type element if available. -->
            <xsl:when test="string-length(msxsl:node-set($data)/bibliography/source[@type = $sourcetype]/column[@id = '1']/format) > 0 ">
              <xsl:value-of select="msxsl:node-set($data)/bibliography/source[@type = $sourcetype]/column[@id = '1']/format"/>
            </xsl:when>
            <!-- Else display error message. -->
            <xsl:otherwise>
              <xsl:if test="msxsl:node-set($data)/general/display_errors = 'yes'">
                <xsl:text>&lt;b&gt;Unsupported </xsl:text>
                <xsl:if test="string-length($type) > 0">
                  <xsl:text>type (</xsl:text>
                  <xsl:value-of select="$type"/>
                  <xsl:text>) and </xsl:text>
                </xsl:if>
                <xsl:text>source type (</xsl:text>
                <xsl:value-of select="$sourcetype"/>
                <xsl:text>) for source </xsl:text>
                <xsl:value-of select="./b:Tag"/>
                <xsl:text>.&lt;/b&gt;</xsl:text>
              </xsl:if>
            </xsl:otherwise>
          </xsl:choose>

        </xsl:variable>

        <!-- Format the source. -->
        <xsl:variable name="paragraphX">
          <xsl:call-template name="format-source">
            <xsl:with-param name="format" select="$format"/>
            <xsl:with-param name="source" select="."/>
          </xsl:call-template>
        </xsl:variable>

        <!-- Convert the formatted source to html. -->
        <xsl:choose>
          <xsl:when test="msxsl:node-set($data)/general/citation_as_link = 'yes'">
            <a name="{./b:Tag}">
              <xsl:value-of select="$paragraphX" disable-output-escaping="yes"/>
            </a>
          </xsl:when>
          <xsl:otherwise>
            <xsl:value-of select="$paragraphX" disable-output-escaping="yes"/>
          </xsl:otherwise>
        </xsl:choose>
      </p>

    </xsl:for-each>

  </xsl:template>

  <!-- Formats a bibliography as a table. -->
  <xsl:template name="format-bibliography-as-table">
    <xsl:param name="bibNodeSet"/>

    <!-- Empty paragraph hack for table. -->
    <p class="MsoBibliography" style="display:none;">x</p>

    <table width="100%">
      <xsl:for-each select="$bibNodeSet/b:Bibliography/b:Source">
        <xsl:sort select="b:SortKey" data-type="text"/>

        <tr>
          <xsl:call-template name="format-bibliography-table-column">
            <xsl:with-param name="columnId" select="1"/>
            <xsl:with-param name="source" select="."/>
          </xsl:call-template>
        </tr>

      </xsl:for-each>
    </table>

    <!-- Empty paragraph hack for table. -->
    <p class="MsoBibliography" style="display:none;">x</p>

  </xsl:template>

  <!-- Formats a single column in a bibliography. -->
  <xsl:template name="format-bibliography-table-column">
    <!-- Source to format. -->
    <xsl:param name="source"/>
    <!-- Id of the column to format. -->
    <xsl:param name="columnId"/>

    <!-- Generate an XML node-set from the formatting data. -->
    <xsl:variable name="params" select="msxsl:node-set($data)"/>

    <!-- Get the format string. -->
    <xsl:variable name="format">
      <xsl:variable name="type" select="./b:Type"/>
      <xsl:variable name="sourcetype" select="./b:SourceType"/>

      <xsl:choose>
        <!-- If there is no source type, its a placeholder. -->
        <xsl:when test="string-length($sourcetype) = 0 and string-length(msxsl:node-set($data)/bibliography/source[@type = 'Placeholder']/column[@id = $columnId]/format) > 0">
          <xsl:value-of select="msxsl:node-set($data)/bibliography/source[@type = 'Placeholder']/column[@id = $columnId]/format"/>
        </xsl:when>
        <!-- Go for the type element if available. -->
        <xsl:when test="string-length($type) > 0 and string-length(msxsl:node-set($data)/bibliography/source[@type = $type]/column[@id = $columnId]/format) > 0 ">
          <xsl:value-of select="msxsl:node-set($data)/bibliography/source[@type = $type]/column[@id = $columnId]/format"/>
        </xsl:when>
        <!-- Else go for the source type element if available. -->
        <xsl:when test="string-length(msxsl:node-set($data)/bibliography/source[@type = $sourcetype]/column[@id = $columnId]/format) > 0 ">
          <xsl:value-of select="msxsl:node-set($data)/bibliography/source[@type = $sourcetype]/column[@id = $columnId]/format"/>
        </xsl:when>
        <!-- Else display error message. -->
        <xsl:otherwise>
          <xsl:if test="msxsl:node-set($data)/general/display_errors = 'yes'">
            <xsl:text>&lt;b&gt;Unsupported </xsl:text>
            <xsl:if test="string-length($type) > 0">
              <xsl:text>type (</xsl:text>
              <xsl:value-of select="$type"/>
              <xsl:text>) and </xsl:text>
            </xsl:if>
            <xsl:text>source type (</xsl:text>
            <xsl:value-of select="$sourcetype"/>
            <xsl:text>) for source </xsl:text>
            <xsl:value-of select="./b:Tag"/>
            <xsl:text>.&lt;/b&gt;</xsl:text>
          </xsl:if>
        </xsl:otherwise>
      </xsl:choose>

    </xsl:variable>

    <!-- Not really efficient at the moment, but it does the trick so errors can be displayed. -->
    <xsl:variable name="type">
      <xsl:variable name="temp" select="$source/b:Type"/>
      <xsl:variable name="temp2" select="$source/b:SourceType"/>

      <xsl:choose>
        <xsl:when test="string-length($temp2) = 0 and string-length(msxsl:node-set($data)/bibliography/source[@type = $temp2]/column[@id = $columnId]/format) > 0 ">
          <xsl:value-of select="'Placeholder'"/>
        </xsl:when>
        <xsl:when test="string-length($temp) > 0 and string-length(msxsl:node-set($data)/bibliography/source[@type = $temp]/column[@id = $columnId]/format) > 0 ">
          <xsl:value-of select="$temp"/>
        </xsl:when>
        <xsl:otherwise>
          <xsl:value-of select="$source/b:SourceType"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <td align="{$params/bibliography/source[@type = $type]/column[@id = $columnId]/halign}" valign="{$params/bibliography/source[@type = $type]/column[@id = $columnId]/valign}">
      <p class="MsoBibliography">

        <xsl:variable name="columnX">
          <xsl:call-template name="format-source">
            <xsl:with-param name="format" select="$format"/>
            <xsl:with-param name="source" select="$source"/>
          </xsl:call-template>
        </xsl:variable>

        <!-- Convert the formatted source to html. -->
        <xsl:choose>
          <xsl:when test="msxsl:node-set($data)/general/citation_as_link = 'yes' and $columnId = 1">
            <a name="{$source/b:Tag}">
              <xsl:value-of select="$columnX" disable-output-escaping="yes"/>
            </a>
          </xsl:when>
          <xsl:otherwise>
            <xsl:value-of select="$columnX" disable-output-escaping="yes"/>
          </xsl:otherwise>
        </xsl:choose>
      </p>
    </td>

    <!-- Process remaining columns recursively. -->
    <xsl:if test="$params/bibliography/columns > $columnId">
      <xsl:call-template name="format-bibliography-table-column">
        <xsl:with-param name="source" select="$source"/>
        <xsl:with-param name="columnId" select="$columnId + 1"/>
      </xsl:call-template>
    </xsl:if>

  </xsl:template>


  <!-- Preprocesses a format string by adding level information to every marker.
       '{' and '}' change into '{level}' and '%' changes into '%level%' where
       level is the depth in the format string.
       This will allow for faster processing by the formatting templates. -->
  <xsl:template name="preprocess-format-string">
    <!-- String to process. -->
    <xsl:param name="string"/>

    <!-- Adds balanced brackets around the entire string to help others. -->
    <xsl:text>{0}</xsl:text>

    <xsl:call-template name="preprocess-format-string-part-2">
      <xsl:with-param name="string" select="$string"/>
    </xsl:call-template>

    <!-- Adds balanced brackets around the entire string to help others. -->
    <xsl:text>{0}</xsl:text>
  </xsl:template>

  <!-- Recursively called helper function for the preprocess-format-string template. -->
  <xsl:template name="preprocess-format-string-part-2">
    <!-- Remaining string. -->
    <xsl:param name="string"/>
    <!-- Current level. -->
    <xsl:param name="level" select="0"/>

    <xsl:if test="string-length($string) > 0">
      <!-- Get the first character of the remaining string. -->
      <xsl:variable name="firstChar" select="substring($string, 1, 1)"/>

      <xsl:choose>
        <!-- A new level is reached. -->
        <xsl:when test="$firstChar = '{'">
          <!-- Calculate the next level. -->
          <xsl:variable name="nextLevel" select="$level + 1"/>

          <!-- Display a conditional processing marker. -->
          <xsl:text>{</xsl:text>
          <xsl:value-of select="$nextLevel"/>
          <xsl:text>}</xsl:text>

          <!-- Recursively process the rest of the string. -->
          <xsl:call-template name="preprocess-format-string-part-2">
            <xsl:with-param name="string" select="substring($string, 2)"/>
            <xsl:with-param name="level" select="$nextLevel"/>
          </xsl:call-template>
        </xsl:when>
        <!-- The current level is finished. -->
        <xsl:when test="$firstChar = '}'">
          <!-- Display a conditional processing marker. -->
          <xsl:text>{</xsl:text>
          <xsl:value-of select="$level"/>
          <xsl:text>}</xsl:text>

          <!-- Recursively process the rest of the string. -->
          <xsl:call-template name="preprocess-format-string-part-2">
            <xsl:with-param name="string" select="substring($string, 2)"/>
            <xsl:with-param name="level" select="$level - 1"/>
          </xsl:call-template>
        </xsl:when>
        <!-- A variable at the current level starts. -->
        <xsl:when test="$firstChar = '%'">
          <!-- Display a variable processing marker (start of variable). -->
          <xsl:text>%</xsl:text>
          <xsl:value-of select="$level"/>
          <xsl:text>%</xsl:text>

          <!-- Display the variable (no use in parsing character by character).-->
          <xsl:value-of select="substring-before(substring($string, 2), '%')"/>

          <!-- Display a variable processing marker (end of variable). -->
          <xsl:text>%</xsl:text>
          <xsl:value-of select="$level"/>
          <xsl:text>%</xsl:text>

          <!-- Recursively process the rest of the string. -->
          <xsl:call-template name="preprocess-format-string-part-2">
            <xsl:with-param name="string" select="substring-after(substring($string, 2), '%')"/>
            <xsl:with-param name="level" select="$level"/>
          </xsl:call-template>
        </xsl:when>
        <xsl:otherwise>
          <!-- Display the first character -->
          <xsl:value-of select="$firstChar"/>

          <!-- Recursively process the rest of the string. -->
          <xsl:call-template name="preprocess-format-string-part-2">
            <xsl:with-param name="string" select="substring($string, 2)"/>
            <xsl:with-param name="level" select="$level"/>
          </xsl:call-template>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:if>
  </xsl:template>

  <!-- Formats a b:Source element. -->
  <xsl:template name="format-source">
    <!-- The b:Source element to format. -->
    <xsl:param name="source"/>
    <!-- The format in which to display the b:Source element. -->
    <xsl:param name="format"/>
    <!-- b:Source child elements which can not be used (-name1-name2).-->
    <xsl:param name="disallowed"/>

    <xsl:call-template name="clean-punctuation">
      <xsl:with-param name="string">
        <xsl:call-template name="format-source-part-2">
          <xsl:with-param name="source" select="$source"/>
          <xsl:with-param name="format">
            <xsl:call-template name="preprocess-format-string">
              <xsl:with-param name="string" select="$format"/>
            </xsl:call-template>
          </xsl:with-param>
          <xsl:with-param name="used" select="$disallowed"/>
        </xsl:call-template>
      </xsl:with-param>
    </xsl:call-template>
  </xsl:template>

  <!-- Helper function for format-source. This function recursively
       resolves the highest level of the first conditional branch of
       the format string. It will return the entire string with at 
       least one less conditional branch.
    -->
  <xsl:template name="format-source-part-2">
    <!-- The b:Source element to format. -->
    <xsl:param name="source"/>
    <!-- The preprocessed format in which to display the b:Source element. -->
    <xsl:param name="format"/>
    <!-- b:Source child elements which can not be used (-name1-name2-).-->
    <xsl:param name="used"/>

    <xsl:choose>
      <!-- Check if there is still conditional processing to do. -->
      <xsl:when test="contains($format, '{')">
        <!-- Get the first level to process. -->
        <xsl:variable name="level" select="substring-before(substring-after($format, '{'), '}')"/>

        <!-- Retrieve the delimeters of the level to process. -->
        <xsl:variable name="delim" select="concat('{', $level,'}')"/>

        <xsl:variable name="current">
          <xsl:call-template name="format-source-part-3">
            <!-- The current source. -->
            <xsl:with-param name="source" select="$source"/>
            <!-- Retrieve the part that has to be processed during this run. -->
            <xsl:with-param name="format" select="substring-before(substring-after($format, $delim), $delim)"/>
            <!-- List of variables which can no longer be used. -->
            <xsl:with-param name="used" select="$used"/>
            <!-- Level of variables to process during this run. -->
            <xsl:with-param name="level" select="$level"/>
          </xsl:call-template>
        </xsl:variable>

        <!-- Part before the part that was processed in this run. -->
        <xsl:value-of select="substring-before($format, $delim)"/>

        <!-- Recursively process the entire string. -->
        <xsl:call-template name="format-source-part-2">
          <!-- The same old source. -->
          <xsl:with-param name="source" select="$source"/>
          <!-- The format string of which one condition is removed. -->
          <xsl:with-param name="format">
            <!-- Result of the part processed in this run. As it can still contain
                 lower level conditional formatting, it has to be reprocessed. -->
            <xsl:value-of select="msxsl:node-set($current)/output"/>
            <!-- Part after the part that was processed in this run. -->
            <xsl:value-of select="substring-after(substring-after($format, $delim), $delim)"/>
          </xsl:with-param>
          <!-- Updated used containing now also the variables used in this run. -->
          <xsl:with-param name="used" select="concat($used, msxsl:node-set($current)/used)"/>
        </xsl:call-template>

      </xsl:when>
      <!-- Otherwise, print the entire leftover string. -->
      <xsl:otherwise>
        <xsl:value-of select="$format"/>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

  <!-- Helper function for format-source-part-2. This function recursively
       resolves the variables at the current level.
    -->
  <xsl:template name="format-source-part-3">
    <!-- The b:Source element to format. -->
    <xsl:param name="source"/>
    <!-- The preprocessed format in which to display the b:Source element. -->
    <xsl:param name="format"/>
    <!-- b:Source child elements which can not be used (-name1-name2-). -->
    <xsl:param name="used"/>
    <!-- Level of variables to process. -->
    <xsl:param name="level"/>
    <!-- Output so far for this part. -->
    <xsl:param name="outputAtCurrentLevel" select="''"/>
    <!-- b:Source child elements which can not be used because they are
         already used at this level. They are an extension to 'used'. -->
    <xsl:param name="usedAtCurrentLevel" select="''"/>

    <xsl:choose>
      <!-- Check if further processing has to be done. -->
      <xsl:when test="string-length($format) > 0">
        <!-- Get the delimeter for the current level of parameters to process. -->
        <xsl:variable name="delim" select="concat('%', $level, '%')"/>

        <xsl:choose>
          <!-- Check if there are variables left at the current level to process. -->
          <xsl:when test="contains($format, $delim)">

            <!-- Get the name of the first available element in the first parameter part. -->
            <xsl:variable name="name">
              <xsl:call-template name="get-source-parameter">
                <xsl:with-param name="parameters" select="substring-before(substring-after($format, $delim), $delim)"/>
                <xsl:with-param name="source" select="$source"/>
                <xsl:with-param name="used" select="concat($used, $usedAtCurrentLevel)"/>
              </xsl:call-template>
            </xsl:variable>

            <xsl:variable name="result">
              <xsl:if test="string-length($name) > 0">
                <!-- Get the formatting options for the element. -->
                <xsl:variable name="options">
                  <xsl:call-template name="substring-before-ex">
                    <xsl:with-param name="string" select="substring-after(substring-before(substring-after($format, $delim), $delim), concat($name, ':'))"/>
                    <xsl:with-param name="delimeter" select="'|'"/>
                  </xsl:call-template>
                </xsl:variable>

                <xsl:choose>
                  <!-- Handle "or" strings in format; e.g.: {%Year|"n.d."%} -->
                  <xsl:when test="starts-with($name, '&#x22;') and substring($name, string-length($name), 1) = '&#x22;'">
                    <xsl:value-of select="substring-before(substring-after($name, '&#x22;'), '&#x22;')"/>
                  </xsl:when>
                  <!-- Handle non-empty author parameters. -->
                  <xsl:when test="string($source/b:Author/*[local-name() = $name])">
                    <!-- Remove non-numeric characters from the options section (mostly for the r option). -->
                    <xsl:variable name="options2" select="translate($options, translate($options, '0123456789', ''), '')"/>

                    <xsl:choose>
                      <!-- Handle contributors of which the format is specified. -->
                      <xsl:when test="string-length($options2) > 0">
                        <xsl:call-template name="format-contributors-by-params">
                          <xsl:with-param name="contributors" select="$source/b:Author/*[local-name() = $name]"/>
                          <xsl:with-param name="params" select="msxsl:node-set($data)/namelists/list[@id = $options2]"/>
                        </xsl:call-template>
                      </xsl:when>
                      <!-- Handle contributor counting. -->
                      <xsl:when test="translate($options, translate($options, 'c', ''), '') = 'c'">
                        <xsl:call-template name="count-contributors">
                          <xsl:with-param name="contributors" select="$source/b:Author/*[local-name() = $name]"/>
                        </xsl:call-template>
                      </xsl:when>
                      <!-- Handle contributors of which the format is not specified. -->
                      <xsl:otherwise>
                        <xsl:call-template name="format-contributors-by-params">
                          <xsl:with-param name="contributors" select="$source/b:Author/*[local-name() = $name]"/>
                          <xsl:with-param name="params" select="msxsl:node-set($data)/namelists/list[@id = 0]"/>
                        </xsl:call-template>
                      </xsl:otherwise>
                    </xsl:choose>
                  </xsl:when>
                  <!-- Handle pages. -->
                  <xsl:when test="$name = 'Pages' and string($source/b:Pages)">
                    <xsl:call-template name="format-pages">
                      <xsl:with-param name="pages" select="$source/b:Pages"/>
                      <xsl:with-param name="options" select="$options"/>
                    </xsl:call-template>
                  </xsl:when>
                  <!-- Handle cited pages. -->
                  <xsl:when test="$name = 'CitationPages' and string($source/b:CitationPages)">
                    <xsl:call-template name="format-pages">
                      <xsl:with-param name="pages" select="$source/b:CitationPages"/>
                      <xsl:with-param name="options" select="$options"/>
                    </xsl:call-template>
                  </xsl:when>
                  <!-- Handle URLs. -->
                  <xsl:when test="$name = 'URL' and string($source/b:URL)">
                    <xsl:call-template name="format-url">
                      <xsl:with-param name="url" select="$source/b:URL"/>
                      <xsl:with-param name="options" select="$options"/>
                    </xsl:call-template>
                  </xsl:when>
                  <!-- Handle years and years accessed. -->
                  <xsl:when test="starts-with($name, 'Year') and string($source/*[local-name() = $name])">
                    <xsl:call-template name="format-year">
                      <xsl:with-param name="year" select="$source/*[local-name() = $name]"/>
                      <xsl:with-param name="options" select="$options"/>
                    </xsl:call-template>
                  </xsl:when>
                  <!-- Handle days and days accessed. -->
                  <xsl:when test="starts-with($name, 'Day') and string($source/*[local-name() = $name])">
                    <xsl:call-template name="format-day">
                      <xsl:with-param name="day" select="$source/*[local-name() = $name]"/>
                      <xsl:with-param name="options" select="$options"/>
                    </xsl:call-template>
                  </xsl:when>
                  <!-- Handle titles. -->
                  <xsl:when test="contains($name, 'Title') and string($source/*[local-name() = $name])">
                    <!-- Format the title. -->
                    <xsl:variable name="title">
                      <xsl:call-template name="format-title">
                        <xsl:with-param name="title" select="$source/*[local-name() = $name]"/>
                        <xsl:with-param name="options" select="$options"/>
                        <xsl:with-param name="delimeter">
                          <xsl:choose>
                            <xsl:when test="string-length(msxsl:node-set($data)/overrides/titles/delimeter) > 0">
                              <xsl:value-of select="msxsl:node-set($data)/overrides/titles/delimeter"/>
                            </xsl:when>
                            <xsl:otherwise>
                              <xsl:text>:</xsl:text>
                            </xsl:otherwise>
                          </xsl:choose>
                        </xsl:with-param>
                        <xsl:with-param name="articles">
                          <xsl:choose>
                            <xsl:when test="string-length(msxsl:node-set($data)/overrides/titles/articles) > 0">
                              <xsl:value-of select="msxsl:node-set($data)/overrides/titles/articles"/>
                            </xsl:when>
                            <xsl:otherwise>
                              <xsl:text>-A-AN-THE-</xsl:text>
                            </xsl:otherwise>
                          </xsl:choose>
                        </xsl:with-param>
                      </xsl:call-template>
                    </xsl:variable>
                    <!-- Display the title or %empty% if the title is empty. -->
                    <xsl:choose>
                      <xsl:when test="string-length($title) = 0">
                        <xsl:text>%empty%</xsl:text>
                      </xsl:when>
                      <xsl:otherwise>
                        <xsl:value-of select="$title"/>
                      </xsl:otherwise>
                    </xsl:choose>
                  </xsl:when>
                  <!-- Handle edition. -->
                  <xsl:when test="$name = 'Edition' and string($source/b:Edition)">
                    <xsl:choose>
                      <xsl:when test="contains($options, 'u')">
                        <xsl:call-template name="upper-case">
                          <xsl:with-param name ="string">
                            <xsl:choose>
                              <xsl:when test="contains($options, 'o')">
                                <xsl:call-template name="format-ordinal">
                                  <xsl:with-param name="number" select="$source/b:Edition"/>
                                  <xsl:with-param name="options" select="$options"/>
                                </xsl:call-template>
                              </xsl:when>
                              <xsl:otherwise>
                                <xsl:value-of select="$source/b:Edition"/>
                              </xsl:otherwise>
                            </xsl:choose>
                          </xsl:with-param>
                        </xsl:call-template>
                      </xsl:when>
                      <xsl:when test="contains($options, 'l')">
                        <xsl:call-template name="lower-case">
                          <xsl:with-param name ="string">
                            <xsl:choose>
                              <xsl:when test="contains($options, 'o')">
                                <xsl:call-template name="format-ordinal">
                                  <xsl:with-param name="number" select="$source/b:Edition"/>
                                  <xsl:with-param name="options" select="$options"/>
                                </xsl:call-template>
                              </xsl:when>
                              <xsl:otherwise>
                                <xsl:value-of select="$source/b:Edition"/>
                              </xsl:otherwise>
                            </xsl:choose>
                          </xsl:with-param>
                        </xsl:call-template>
                      </xsl:when>
                      <xsl:otherwise>
                        <xsl:choose>
                          <xsl:when test="contains($options, 'o')">
                            <xsl:call-template name="format-ordinal">
                              <xsl:with-param name="number" select="$source/b:Edition"/>
                              <xsl:with-param name="options" select="$options"/>
                            </xsl:call-template>
                          </xsl:when>
                          <xsl:otherwise>
                            <xsl:value-of select="$source/b:Edition"/>
                          </xsl:otherwise>
                        </xsl:choose>
                      </xsl:otherwise>
                    </xsl:choose>
                  </xsl:when>
                  <!-- Handle volume and citation volume. -->
                  <xsl:when test="($name = 'Volume' or $name = 'CitationVolume') and string($source/*[local-name() = $name]) and number($source/*[local-name() = $name]) > 0">
                    <xsl:call-template name="format-number">
                      <xsl:with-param name="number" select="$source/*[local-name() = $name]"/>
                      <xsl:with-param name="options" select="translate($options, translate($options, 'R', ''), '')"/>
                    </xsl:call-template>
                  </xsl:when>
                  <!-- Handle months and months accessed. -->
                  <xsl:when test="starts-with($name, 'Month') and string($source/*[local-name() = $name])">
                    <xsl:call-template name="format-month">
                      <xsl:with-param name="month" select="$source/*[local-name() = $name]"/>
                      <xsl:with-param name="options" select="$options"/>
                    </xsl:call-template>
                  </xsl:when>
                  <!-- Handle source types. -->
                  <xsl:when test="$name = 'SourceType' and string($source/b:SourceType)">
                    <xsl:call-template name="format-sourcetype">
                      <xsl:with-param name="type" select="$source/b:SourceType"/>
                      <xsl:with-param name="options" select="$options"/>
                    </xsl:call-template>
                  </xsl:when>
                  <!-- Handle all other non-empty, non-author parameters. -->
                  <xsl:when test="string($source/*[local-name() = $name])">
                    <xsl:choose>
                      <xsl:when test="contains($options, 'u')">
                        <xsl:call-template name="upper-case">
                          <xsl:with-param name ="string" select="$source/*[local-name() = $name]"/>
                        </xsl:call-template>
                      </xsl:when>
                      <xsl:when test="contains($options, 'l')">
                        <xsl:call-template name="lower-case">
                          <xsl:with-param name ="string" select="$source/*[local-name() = $name]"/>
                        </xsl:call-template>
                      </xsl:when>
                      <xsl:otherwise>
                        <xsl:value-of select="$source/*[local-name() = $name]"/>
                      </xsl:otherwise>
                    </xsl:choose>
                  </xsl:when>
                </xsl:choose>
              </xsl:if>
              <!-- Mark the element as being empty. -->
              <xsl:if test="string-length($name) = 0">
                <xsl:text>%empty%</xsl:text>
              </xsl:if>
            </xsl:variable>

            <xsl:if test="$result != '%empty%'">
              <xsl:call-template name="format-source-part-3">
                <xsl:with-param name="source" select="$source"/>
                <!-- Process the part remaining after the current part. -->
                <xsl:with-param name="format" select="substring-after(substring-after($format, $delim), $delim)"/>
                <xsl:with-param name="level" select="$level"/>
                <xsl:with-param name="used" select="$used"/>
                <xsl:with-param name="outputAtCurrentLevel">
                  <xsl:value-of select="$outputAtCurrentLevel"/>
                  <!-- Output before the result of this round. -->
                  <xsl:value-of select="substring-before($format, $delim)"/>
                  <!-- Result from this round-->
                  <xsl:value-of select="$result"/>
                </xsl:with-param>
                <xsl:with-param name="usedAtCurrentLevel">
                  <xsl:value-of select="$usedAtCurrentLevel"/>
                  <!-- Used this round. -->
                  <xsl:if test="string-length($name) > 0">
                    <!-- Get the formatting options for the element. -->
                    <xsl:variable name="options">
                      <xsl:call-template name="substring-before-ex">
                        <xsl:with-param name="string" select="substring-after(substring-before(substring-after($format, $delim), $delim), concat($name, ':'))"/>
                        <xsl:with-param name="delimeter" select="'|'"/>
                      </xsl:call-template>
                    </xsl:variable>
                    <!-- Only add the variable to the used list if the 'r' option is not used. -->
                    <xsl:if test="not(contains($options, 'r'))">
                      <xsl:text>-</xsl:text>
                      <xsl:value-of select="$name"/>
                      <xsl:text>-</xsl:text>
                    </xsl:if>
                  </xsl:if>
                </xsl:with-param>
              </xsl:call-template>
            </xsl:if>
          </xsl:when>
          <!-- Otherwise there are no variables left to process. -->
          <xsl:otherwise>
            <xsl:call-template name="format-source-part-3">
              <xsl:with-param name="format" select="''"/>
              <xsl:with-param name="outputAtCurrentLevel" select="concat($outputAtCurrentLevel, $format)"/>
              <xsl:with-param name="usedAtCurrentLevel" select="$usedAtCurrentLevel"/>
            </xsl:call-template>
          </xsl:otherwise>
        </xsl:choose>

      </xsl:when>
      <!-- Otherwise, finish the output of the function. -->
      <xsl:otherwise>
        <xsl:choose>
          <!-- Check if anything has to be send to the output and if the used variables section has to be updated. -->
          <xsl:when test="not(contains($outputAtCurrentLevel, '%empty%')) and string-length($outputAtCurrentLevel) > 0">
            <output>
              <xsl:value-of select="$outputAtCurrentLevel"/>
            </output>
            <used>
              <xsl:value-of select="$usedAtCurrentLevel"/>
            </used>
          </xsl:when>
          <!-- Otherwise, nothing has to be send to the output. The used variables stay used. -->
          <xsl:otherwise>
            <output></output>
            <used></used>
          </xsl:otherwise>
        </xsl:choose>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Retrieves the first non empty source parameter name. -->
  <xsl:template name="get-source-parameter">
    <!-- A string with one or more parameters separated by '|'. -->
    <xsl:param name="parameters"/>
    <!-- The b:Source element. -->
    <xsl:param name="source"/>
    <!-- A string with no longer available child elements of the b:Source element (-name1-name2). -->
    <xsl:param name="used"/>

    <xsl:if test="string-length($parameters) > 0">
      <!-- Get the name of the first parameter. -->
      <xsl:variable name="name">
        <xsl:call-template name="substring-before-ex">
          <xsl:with-param name="string">
            <xsl:call-template name="substring-before-ex">
              <xsl:with-param name="string" select="$parameters"/>
              <xsl:with-param name="delimeter" select="'|'"/>
            </xsl:call-template>
          </xsl:with-param>
          <xsl:with-param name="delimeter" select="':'"/>
        </xsl:call-template>
      </xsl:variable>

      <!-- Check if the name is one of a valid parameter. -->
      <xsl:choose>
        <!-- If it is a valid parameter, stop the processing. -->
        <!--   Remark: a quoted string is a valid parameter; e.g.: {%Year|"n.d."%} -->
        <xsl:when test="starts-with($name, '&#x22;') and substring($name, string-length($name), 1) = '&#x22;' and not(contains($used, concat('-', $name)))">
          <xsl:value-of select="$name"/>
        </xsl:when>
        <!--   Remark: the b:Author hack is necessary to get around the b:Source/b:Author/b:Author problem. -->
        <xsl:when test="(($name != 'Author' and string($source/*[local-name() = $name])) or string($source/b:Author/*[local-name() = $name])) and not(contains($used, concat('-', $name)))">
          <xsl:value-of select="$name"/>
        </xsl:when>
        <!-- Otherwise, process the remainder of the parameters. -->
        <xsl:otherwise>
          <xsl:call-template name="get-source-parameter">
            <xsl:with-param name="parameters" select="substring-after($parameters, '|')"/>
            <xsl:with-param name="source" select="$source"/>
            <xsl:with-param name="used" select="$used"/>
          </xsl:call-template>
        </xsl:otherwise>
      </xsl:choose>

    </xsl:if>

  </xsl:template>

  <!-- Formats a b:Person element. -->
  <xsl:template name="format-person">
    <!-- The b:Person element to format. -->
    <xsl:param name="person"/>
    <!-- The format in which to display the b:Person element. -->
    <xsl:param name="format"/>

    <xsl:call-template name="format-person-part-2">
      <xsl:with-param name="person" select="$person"/>
      <xsl:with-param name="format">
        <xsl:call-template name="preprocess-format-string">
          <xsl:with-param name="string" select="$format"/>
        </xsl:call-template>
      </xsl:with-param>
    </xsl:call-template>

  </xsl:template>

  <!-- Helper function for format-person. This function recursively
       resolves the highest level of the first conditional branch of
       the format string. It will return the entire string with at 
       least one less conditional branch.
    -->
  <xsl:template name="format-person-part-2">
    <!-- The b:Person element to format. -->
    <xsl:param name="person"/>
    <!-- The format in which to display the b:Person element. -->
    <xsl:param name="format"/>
    <!-- b:Person child elements which can not be used. -->
    <xsl:param name="used"/>

    <xsl:choose>
      <!-- Check if there is still conditional processing to do. -->
      <xsl:when test="contains($format, '{')">
        <!-- Get the first level to process. -->
        <xsl:variable name="level" select="substring-before(substring-after($format, '{'), '}')"/>

        <!-- Retrieve the delimeters of the level to process. -->
        <xsl:variable name="delim" select="concat('{', $level,'}')"/>

        <xsl:variable name="current">
          <xsl:call-template name="format-person-part-3">
            <!-- The current source. -->
            <xsl:with-param name="person" select="$person"/>
            <!-- Retrieve the part that has to be processed during this run. -->
            <xsl:with-param name="format" select="substring-before(substring-after($format, $delim), $delim)"/>
            <!-- List of variables which can no longer be used. -->
            <xsl:with-param name="used" select="$used"/>
            <!-- Level of variables to process during this run. -->
            <xsl:with-param name="level" select="$level"/>
          </xsl:call-template>
        </xsl:variable>

        <!-- Part before the part that was processed in this run. -->
        <xsl:value-of select="substring-before($format, $delim)"/>

        <!-- Recursively process the entire string. -->
        <xsl:call-template name="format-person-part-2">
          <!-- The same old source. -->
          <xsl:with-param name="person" select="$person"/>
          <!-- The format string of which one condition is removed. -->
          <xsl:with-param name="format">
            <!-- Result of the part processed in this run. As it can still contain
                 lower level conditional formatting, it has to be reprocessed. -->
            <xsl:value-of select="msxsl:node-set($current)/output"/>
            <!-- Part after the part that was processed in this run. -->
            <xsl:value-of select="substring-after(substring-after($format, $delim), $delim)"/>
          </xsl:with-param>
          <!-- Updated used containing now also the variables used in this run. -->
          <xsl:with-param name="used" select="concat($used, msxsl:node-set($current)/used)"/>
        </xsl:call-template>

      </xsl:when>
      <!-- Otherwise, print the entire leftover string. -->
      <xsl:otherwise>
        <xsl:value-of select="$format"/>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Helper function for format-source-part-2. This function recursively
       resolves the variables at the current level.
    -->
  <xsl:template name="format-person-part-3">
    <!-- The b:Source element to format. -->
    <xsl:param name="person"/>
    <!-- The preprocessed format in which to display the b:Source element. -->
    <xsl:param name="format"/>
    <!-- b:Source child elements which can not be used (-name1-name2-). -->
    <xsl:param name="used"/>
    <!-- Level of variables to process. -->
    <xsl:param name="level"/>
    <!-- Output so far for this part. -->
    <xsl:param name="outputAtCurrentLevel" select="''"/>
    <!-- b:Source child elements which can not be used because they are
         already used at this level. They are an extension to 'used'. -->
    <xsl:param name="usedAtCurrentLevel" select="''"/>

    <xsl:choose>
      <!-- Check if further processing has to be done. -->
      <xsl:when test="string-length($format) > 0">
        <!-- Get the delimeter for the current level of parameters to process. -->
        <xsl:variable name="delim" select="concat('%', $level, '%')"/>

        <xsl:choose>
          <!-- Check if there are variables left at the current level to process. -->
          <xsl:when test="contains($format, $delim)">

            <!-- Get the name of the first available element in the first parameter part. -->
            <xsl:variable name="name">
              <xsl:call-template name="get-person-parameter">
                <xsl:with-param name="parameters" select="substring-before(substring-after($format, $delim), $delim)"/>
                <xsl:with-param name="person" select="$person"/>
                <xsl:with-param name="used" select="concat($used, $usedAtCurrentLevel)"/>
              </xsl:call-template>
            </xsl:variable>

            <xsl:variable name="result">
              <xsl:if test="string-length($name) > 0">
                <!-- Get the formatting options for the element. -->
                <xsl:variable name="options">
                  <xsl:call-template name="substring-before-ex">
                    <xsl:with-param name="string" select="substring-after(substring-before(substring-after($format, $delim), $delim), concat($name, ':'))"/>
                    <xsl:with-param name="delimeter" select="'|'"/>
                  </xsl:call-template>
                </xsl:variable>

                <!-- Set case correctly. -->
                <xsl:variable name="case">
                  <xsl:choose>
                    <xsl:when test="contains($options, 'u')">
                      <xsl:call-template name="upper-case">
                        <xsl:with-param name="string" select="$person/*[local-name() = $name]"/>
                      </xsl:call-template>
                    </xsl:when>
                    <xsl:when test="contains($options, 'l')">
                      <xsl:call-template name="lower-case">
                        <xsl:with-param name="string" select="$person/*[local-name() = $name]"/>
                      </xsl:call-template>
                    </xsl:when>
                    <xsl:otherwise>
                      <xsl:value-of select="$person/*[local-name() = $name]"/>
                    </xsl:otherwise>
                  </xsl:choose>
                </xsl:variable>

                <!-- Handle abbreviation. -->
                <xsl:choose>
                  <xsl:when test="contains($options, 'a')">
                    <xsl:call-template name="abbreviate-name">
                      <xsl:with-param name="name" select="$case"/>
                      <xsl:with-param name="keepDashes">
                        <xsl:choose>
                          <xsl:when test="contains($options, 'd')">
                            <xsl:text>1</xsl:text>
                          </xsl:when>
                          <xsl:otherwise>
                            <xsl:text>0</xsl:text>
                          </xsl:otherwise>
                        </xsl:choose>
                      </xsl:with-param>
                      <xsl:with-param name="withPeriods">
                        <xsl:choose>
                          <xsl:when test="contains($options, 'p')">
                            <xsl:text>1</xsl:text>
                          </xsl:when>
                          <xsl:otherwise>
                            <xsl:text>0</xsl:text>
                          </xsl:otherwise>
                        </xsl:choose>
                      </xsl:with-param>
                      <xsl:with-param name="keepSpaces">
                        <xsl:choose>
                          <xsl:when test="contains($options, 's')">
                            <xsl:text>1</xsl:text>
                          </xsl:when>
                          <xsl:otherwise>
                            <xsl:text>0</xsl:text>
                          </xsl:otherwise>
                        </xsl:choose>
                      </xsl:with-param>
                    </xsl:call-template>
                  </xsl:when>
                  <xsl:otherwise>
                    <xsl:value-of select="$case"/>
                  </xsl:otherwise>
                </xsl:choose>

              </xsl:if>
              <!-- Mark the element as being empty. -->
              <xsl:if test="string-length($name) = 0">
                <xsl:text>%empty%</xsl:text>
              </xsl:if>
            </xsl:variable>

            <xsl:if test="$result != '%empty%'">
              <xsl:call-template name="format-person-part-3">
                <xsl:with-param name="person" select="$person"/>
                <!-- Process the part remaining after the current part. -->
                <xsl:with-param name="format" select="substring-after(substring-after($format, $delim), $delim)"/>
                <xsl:with-param name="level" select="$level"/>
                <xsl:with-param name="used" select="$used"/>
                <xsl:with-param name="outputAtCurrentLevel">
                  <xsl:value-of select="$outputAtCurrentLevel"/>
                  <!-- Output before the result of this round. -->
                  <xsl:value-of select="substring-before($format, $delim)"/>
                  <!-- Result from this round-->
                  <xsl:value-of select="$result"/>
                </xsl:with-param>
                <xsl:with-param name="usedAtCurrentLevel">
                  <xsl:value-of select="$usedAtCurrentLevel"/>
                  <!-- Used this round. -->
                  <xsl:if test="string-length($name) > 0">
                    <!-- Get the formatting options for the element. -->
                    <xsl:variable name="options">
                      <xsl:call-template name="substring-before-ex">
                        <xsl:with-param name="string" select="substring-after(substring-before(substring-after($format, $delim), $delim), concat($name, ':'))"/>
                        <xsl:with-param name="delimeter" select="'|'"/>
                      </xsl:call-template>
                    </xsl:variable>
                    <!-- Only add the variable to the used list if the 'r' option is not used. -->
                    <xsl:if test="not(contains($options, 'r'))">
                      <xsl:text>-</xsl:text>
                      <xsl:value-of select="$name"/>
                      <xsl:text>-</xsl:text>
                    </xsl:if>
                  </xsl:if>
                </xsl:with-param>
              </xsl:call-template>
            </xsl:if>
          </xsl:when>
          <!-- Otherwise there are no variables left to process. -->
          <xsl:otherwise>
            <xsl:call-template name="format-person-part-3">
              <xsl:with-param name="format" select="''"/>
              <xsl:with-param name="outputAtCurrentLevel" select="concat($outputAtCurrentLevel, $format)"/>
              <xsl:with-param name="usedAtCurrentLevel" select="$usedAtCurrentLevel"/>
            </xsl:call-template>
          </xsl:otherwise>
        </xsl:choose>

      </xsl:when>
      <!-- Otherwise, finish the output of the function. -->
      <xsl:otherwise>
        <xsl:choose>
          <!-- Check if anything has to be send to the output and if the used variables section has to be updated. -->
          <xsl:when test="not(contains($outputAtCurrentLevel, '%empty%')) and string-length($outputAtCurrentLevel) > 0">
            <output>
              <xsl:value-of select="$outputAtCurrentLevel"/>
            </output>
            <used>
              <xsl:value-of select="$usedAtCurrentLevel"/>
            </used>
          </xsl:when>
          <!-- Otherwise, nothing has to be send to the output. The used variables stay used. -->
          <xsl:otherwise>
            <output></output>
            <used></used>
          </xsl:otherwise>
        </xsl:choose>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Retrieves the first non empty person parameter name. -->
  <xsl:template name="get-person-parameter">
    <!-- A string with one or more parameters separated by '|'. -->
    <xsl:param name="parameters"/>
    <!-- The b:Person element. -->
    <xsl:param name="person"/>
    <!-- A string with no longer available child elements of the b:Person element (-name1-name2). -->
    <xsl:param name="used"/>

    <xsl:if test="string-length($parameters) > 0">

      <!-- Get the name of the first parameter. -->
      <xsl:variable name="name">
        <xsl:call-template name="substring-before-ex">
          <xsl:with-param name="string">
            <xsl:call-template name="substring-before-ex">
              <xsl:with-param name="string" select="$parameters"/>
              <xsl:with-param name="delimeter" select="'|'"/>
            </xsl:call-template>
          </xsl:with-param>
          <xsl:with-param name="delimeter" select="':'"/>
        </xsl:call-template>
      </xsl:variable>

      <!-- Check if the name is one of a valid parameter. -->
      <xsl:choose>
        <!-- If it is a valid parameter, stop the processing. -->
        <xsl:when test="string($person/*[local-name() = $name]) and not(contains($used, concat('-', $name)))">
          <xsl:value-of select="$name"/>
        </xsl:when>
        <!-- Otherwise, process the remainder of the parameters. -->
        <xsl:otherwise>
          <xsl:call-template name="get-person-parameter">
            <xsl:with-param name="parameters" select="substring-after($parameters, '|')"/>
            <xsl:with-param name="person" select="$person"/>
            <xsl:with-param name="used" select="$used"/>
          </xsl:call-template>
        </xsl:otherwise>
      </xsl:choose>

    </xsl:if>

  </xsl:template>

  <!-- Formats a b:Corporate element. -->
  <xsl:template name="format-corporate">
    <!-- The b:Corporate element to format. -->
    <xsl:param name="corporate"/>
    <!-- The format in which to display the b:Corporate element. -->
    <xsl:param name="format"/>

    <!-- Simplified version of the other formatting functions. -->

    <xsl:variable name="temp">
      <!-- Temporarely variable. -->
      <xsl:variable name="remainder" select="substring-after($format, '%')"/>

      <!-- The part before the parameter. -->
      <xsl:value-of select="substring-before($format, '%')"/>

      <!-- Get the options. -->
      <xsl:variable name="options">
        <xsl:call-template name="lower-case">
          <xsl:with-param name="string" select="substring-after(substring-before($remainder, '%'), ':')"/>
        </xsl:call-template>
      </xsl:variable>

      <!-- Format the corporate parameter. -->

      <!-- Abbreviate the corporate parameter if necessary. -->
      <xsl:variable name="corp">
        <xsl:choose>
          <xsl:when test="contains($options, 'a')">
            <xsl:call-template name="abbreviate-name">
              <xsl:with-param name="name" select="$corporate"/>
              <xsl:with-param name="keepDashes">
                <xsl:choose>
                  <xsl:when test="contains($options, 'd')">
                    <xsl:text>1</xsl:text>
                  </xsl:when>
                  <xsl:otherwise>
                    <xsl:text>0</xsl:text>
                  </xsl:otherwise>
                </xsl:choose>
              </xsl:with-param>
              <xsl:with-param name="withPeriods">
                <xsl:choose>
                  <xsl:when test="contains($options, 'p')">
                    <xsl:text>1</xsl:text>
                  </xsl:when>
                  <xsl:otherwise>
                    <xsl:text>0</xsl:text>
                  </xsl:otherwise>
                </xsl:choose>
              </xsl:with-param>
              <xsl:with-param name="keepSpaces">
                <xsl:choose>
                  <xsl:when test="contains($options, 's')">
                    <xsl:text>1</xsl:text>
                  </xsl:when>
                  <xsl:otherwise>
                    <xsl:text>0</xsl:text>
                  </xsl:otherwise>
                </xsl:choose>
              </xsl:with-param>
            </xsl:call-template>
          </xsl:when>
          <xsl:otherwise>
            <xsl:value-of select="$corporate"/>
          </xsl:otherwise>
        </xsl:choose>
      </xsl:variable>

      <!-- Set the case. -->
      <xsl:choose>
        <xsl:when test="contains($options, 'u')">
          <xsl:call-template name="upper-case">
            <xsl:with-param name="string" select="$corp"/>
          </xsl:call-template>
        </xsl:when>
        <xsl:when test="contains($options, 'l')">
          <xsl:call-template name="lower-case">
            <xsl:with-param name="string" select="$corp"/>
          </xsl:call-template>
        </xsl:when>
        <xsl:otherwise>
          <xsl:value-of select="$corp"/>
        </xsl:otherwise>
      </xsl:choose>

      <!-- The part after the parameter. -->
      <xsl:value-of select="substring-after($remainder, '%')"/>
    </xsl:variable>

    <xsl:value-of select="translate($temp, '{}', '')"/>

  </xsl:template>

  <!-- Formats a set of contributors by means of parameters. -->
  <xsl:template name="format-contributors-by-params">
    <!-- A set containing either a b:Corporate or a b:NameList element. -->
    <xsl:param name="contributors" />
    <!-- An XML tree containing formatting information, the following
         elements should be provided:
          <format type="...">
            <single_prefix></single_prefix>
            <multi_prefix></multi_prefix>
            <corporate></corporate>
            <first_person></first_person>
            <other_persons></other_persons>
            <separator_between_if_two></separator_between_if_two>
            <separator_between_if_more_than_two></separator_between_if_more_than_two>
            <separator_before_last></separator_before_last>
            <max_number_of_persons_to_display></max_number_of_persons_to_display>
            <number_of_persons_to_display_if_more_than_max></number_of_persons_to_display_if_more_than_max>
            <overflow></overflow>
            <single_suffix></single_suffix>
            <multi_suffix></multi_suffix>
          </format>         
      -->
    <xsl:param name="params" />

    <xsl:choose>
      <!-- b:Corporate contributor. -->
      <xsl:when test="string-length($contributors/b:Corporate) > 0">
        <!-- Display the single prefix. -->
        <xsl:value-of select="$params/single_prefix"/>

        <!-- Display the formatted b:Corporate element. -->
        <xsl:call-template name="format-corporate">
          <xsl:with-param name="corporate" select="$contributors/b:Corporate"/>
          <xsl:with-param name="format" select="$params/corporate"/>
        </xsl:call-template>

        <!-- Display the single suffix. -->
        <xsl:value-of select="$params/single_suffix"/>
      </xsl:when>
      <!-- b:NameList contributor(s). -->
      <xsl:otherwise>
        <!-- Count the number of b:Person elements in the node-set. -->
        <xsl:variable name="numPersons" select="count($contributors/b:NameList/b:Person)" />

        <xsl:if test="$numPersons > 0">
          <!-- Calculate the number of b:Person elements to display. -->
          <xsl:variable name="numDisplay">
            <xsl:choose>
              <xsl:when test="$numPersons > $params/max_number_of_persons_to_display">
                <xsl:value-of select="$params/number_of_persons_to_display_if_more_than_max"/>
              </xsl:when>
              <xsl:otherwise>
                <xsl:value-of select="$numPersons"/>
              </xsl:otherwise>
            </xsl:choose>
          </xsl:variable>

          <!-- Display the prefix. -->
          <xsl:choose>
            <xsl:when test="$numPersons > 1">
              <!-- Display the multi prefix. -->
              <xsl:value-of select="$params/multi_prefix"/>
            </xsl:when>
            <xsl:otherwise>
              <!-- Display the single prefix. -->
              <xsl:value-of select="$params/single_prefix"/>
            </xsl:otherwise>
          </xsl:choose>

          <!-- Handle all the b:Person elements. -->
          <xsl:for-each select="$contributors/b:NameList/b:Person">
            <!-- The position of the current b:Person element. -->
            <xsl:variable name="pos" select="position()" />

            <xsl:choose>
              <xsl:when test="position() > $numDisplay"/>
              <xsl:when test="position() = 1">
                <xsl:call-template name="format-person">
                  <xsl:with-param name="person" select="." />
                  <xsl:with-param name="format" select="$params/first_person" />
                </xsl:call-template>
              </xsl:when>
              <xsl:when test="position() = 2 and $numPersons = 2">
                <xsl:value-of select="$params/separator_between_if_two"/>
                <xsl:call-template name="format-person">
                  <xsl:with-param name="person" select="." />
                  <xsl:with-param name="format" select="$params/other_persons" />
                </xsl:call-template>
              </xsl:when>
              <xsl:when test="(position() = $numDisplay) and not($numPersons > $numDisplay)">
                <xsl:value-of select="$params/separator_before_last"/>
                <xsl:call-template name="format-person">
                  <xsl:with-param name="person" select="." />
                  <xsl:with-param name="format" select="$params/other_persons" />
                </xsl:call-template>
              </xsl:when>
              <xsl:otherwise>
                <xsl:value-of select="$params/separator_between_if_more_than_two"/>
                <xsl:call-template name="format-person">
                  <xsl:with-param name="person" select="." />
                  <xsl:with-param name="format" select="$params/other_persons" />
                </xsl:call-template>
              </xsl:otherwise>
            </xsl:choose>
          </xsl:for-each>

          <!-- Handle overflow. -->
          <xsl:if test="$numPersons > $numDisplay">
            <xsl:value-of select="$params/overflow"/>
          </xsl:if>

          <!-- Display the suffix. -->
          <xsl:choose>
            <xsl:when test="$numPersons > 1">
              <!-- Display the multi suffix. -->
              <xsl:value-of select="$params/multi_suffix"/>
            </xsl:when>
            <xsl:otherwise>
              <!-- Display the single suffix. -->
              <xsl:value-of select="$params/single_suffix"/>
            </xsl:otherwise>
          </xsl:choose>
        </xsl:if>

      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Abbreviate a name (or part of a name if called recursively). -->
  <xsl:template name="abbreviate-name">
    <!-- Name or part of name to abbreviate. -->
    <xsl:param name="name"/>
    <!-- Flag indicating if abbreviated parts should be followed by a period (1) or not (0). -->
    <xsl:param name="withPeriods" select="1"/>
    <!-- Flag indicating if spaces between abbreviated parts should be kept (1) or not (0). -->
    <xsl:param name="keepSpaces" select="1"/>
    <!-- Flag indicating if dashes between abbreviated parts should be kept (1) or not (0). -->
    <xsl:param name="keepDashes" select="1"/>

    <xsl:choose>
      <!-- Handle 'A-B' -->
      <xsl:when test="contains($name, '-')">
        <xsl:call-template name="abbreviate-name">
          <xsl:with-param name="name" select="substring-before(normalize-space($name), '-')"/>
          <xsl:with-param name="withPeriods" select="$withPeriods"/>
          <xsl:with-param name="keepSpaces" select="$keepSpaces"/>
          <xsl:with-param name="keepDashes" select="$keepDashes"/>
        </xsl:call-template>
        <xsl:if test="$keepDashes = 1">
          <xsl:text>-</xsl:text>
        </xsl:if>
        <xsl:call-template name="abbreviate-name">
          <xsl:with-param name="name" select="substring-after(normalize-space($name), '-')"/>
          <xsl:with-param name="withPeriods" select="$withPeriods"/>
          <xsl:with-param name="keepSpaces" select="$keepSpaces"/>
          <xsl:with-param name="keepDashes" select="$keepDashes"/>
        </xsl:call-template>
      </xsl:when>
      <!-- Handle 'A B' -->
      <xsl:when test="contains($name, ' ')">
        <xsl:call-template name="abbreviate-name">
          <xsl:with-param name="name" select="substring-before(normalize-space($name), ' ')"/>
          <xsl:with-param name="withPeriods" select="$withPeriods"/>
          <xsl:with-param name="keepSpaces" select="$keepSpaces"/>
          <xsl:with-param name="keepDashes" select="$keepDashes"/>
        </xsl:call-template>
        <xsl:if test="$keepSpaces = 1">
          <xsl:text> </xsl:text>
        </xsl:if>
        <xsl:call-template name="abbreviate-name">
          <xsl:with-param name="name" select="substring-after(normalize-space($name), ' ')"/>
          <xsl:with-param name="withPeriods" select="$withPeriods"/>
          <xsl:with-param name="keepSpaces" select="$keepSpaces"/>
          <xsl:with-param name="keepDashes" select="$keepDashes"/>
        </xsl:call-template>
      </xsl:when>
      <!-- Handle 'A.B.'-->
      <xsl:when test="contains($name, '.') and string-length(substring-after($name, '.')) &gt; 0">
        <xsl:call-template name="abbreviate-name">
          <xsl:with-param name="name" select="substring-before(normalize-space($name), '.')"/>
          <xsl:with-param name="withPeriods" select="$withPeriods"/>
          <xsl:with-param name="keepSpaces" select="$keepSpaces"/>
          <xsl:with-param name="keepDashes" select="$keepDashes"/>
        </xsl:call-template>
        <xsl:if test="$keepSpaces = 1">
          <xsl:text> </xsl:text>
        </xsl:if>
        <xsl:call-template name="abbreviate-name">
          <xsl:with-param name="name" select="substring-after(normalize-space($name), '.')"/>
          <xsl:with-param name="withPeriods" select="$withPeriods"/>
          <xsl:with-param name="keepSpaces" select="$keepSpaces"/>
          <xsl:with-param name="keepDashes" select="$keepDashes"/>
        </xsl:call-template>
      </xsl:when>
      <xsl:otherwise>
        <xsl:if test="string-length($name) > 0">
          <xsl:value-of select="substring($name,1,1)"/>
          <xsl:if test="$withPeriods = 1">
            <xsl:text>.</xsl:text>
          </xsl:if>
        </xsl:if>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Abbreviates a string to its capital letters only. -->
  <xsl:template name="abbreviate-to-capitals">
    <!-- String to abbreviate. -->
    <xsl:param name="string"/>

    <xsl:value-of select="translate($string, translate($string, concat($uppercase,'-'), ''), '')"/>
  </xsl:template>

  <!-- Counts the number of contributors in a contributors element. -->
  <xsl:template name="count-contributors">
    <!-- A set containing either a b:Corporate or a b:NameList element. -->
    <xsl:param name="contributors" />

    <xsl:choose>
      <!-- b:Corporate contributor. -->
      <xsl:when test="string-length($contributors/b:Corporate) > 0">
        <xsl:text>1</xsl:text>
      </xsl:when>
      <!-- b:NameList contributor(s). -->
      <xsl:when test="string-length($contributors/b:NameList) > 0">
        <xsl:value-of select="count($contributors/b:NameList/b:Person)" />
      </xsl:when>
      <!-- Empty element. -->
      <xsl:otherwise>
        <xsl:text>0</xsl:text>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>



  <!-- Formats an URL. -->
  <xsl:template name="format-url">
    <!-- URL to format. -->
    <xsl:param name="url"/>
    <!-- Options (l: display as clickable link, s: split url over multiple lines) -->
    <xsl:param name="options"/>

    <xsl:if test="string-length($url) > 0">
      <!-- Open tag. -->
      <xsl:if test="contains($options, 'l')">
        <xsl:text>&lt;a href="</xsl:text>
        <xsl:value-of select="$url"/>
        <xsl:text>"&gt;</xsl:text>
      </xsl:if>

      <!-- Hack in case <URL> is requested and not as link. -->
      <xsl:if test="not(contains($options, 'l'))">
        <xsl:text>&lt;span/&gt;</xsl:text>
      </xsl:if>

      <!-- Display URL. -->
      <xsl:choose>
        <!-- Manipulate URL for display. -->
        <xsl:when test="contains($options, 's')">
          <xsl:call-template name="add-zwsp">
            <xsl:with-param name="string" select="$url"/>
            <xsl:with-param name="afterChars" select="'/'"/>
          </xsl:call-template>
        </xsl:when>
        <!-- Don't manipulate URL for display. -->
        <xsl:otherwise>
          <xsl:value-of select="$url"/>
        </xsl:otherwise>
      </xsl:choose>

      <!-- Close tag. -->
      <xsl:if test="contains($options, 'l')">
        <xsl:text>&lt;/a&gt;</xsl:text>
      </xsl:if>
    </xsl:if>

  </xsl:template>

  <!-- Adds zero-width spaces to a string to allow splitting long strings over multiple lines. -->
  <xsl:template name="add-zwsp">
    <!-- The (partial) string to add zero-width spaces to. -->
    <xsl:param name="string"/>
    <!-- Characters (not a string) to add a zero-width space after. If empty, one is added after each character. -->
    <xsl:param name="afterChars"/>

    <xsl:choose>
      <!-- Only check to add a zwsp if there is more than one character left. -->
      <xsl:when test="string-length($string) > 1">
        <!-- Display first character of string. -->
        <xsl:value-of select="substring($string, 1, 1)"/>
        <!-- Add zwsp if required. -->
        <xsl:if test="string-length($afterChars) = 0 or contains($afterChars, substring($string, 1, 1))">
          <xsl:value-of select="'&#8203;'"/>
        </xsl:if>
        <!-- Process the remainder of the string. -->
        <xsl:call-template name="add-zwsp">
          <xsl:with-param name="string" select="substring($string, 2)"/>
          <xsl:with-param name="afterChars" select="$afterChars"/>
        </xsl:call-template>
      </xsl:when>
      <xsl:otherwise>
        <xsl:value-of select="$string"/>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Formats a year. -->
  <xsl:template name="format-year">
    <!-- A year to format. -->
    <xsl:param name="year"/>
    <!-- Options for year formatting. -->
    <xsl:param name="options"/>

    <xsl:choose>
      <xsl:when test="contains($options, 's')">
        <xsl:value-of select="substring($year, 2, 2)"/>
      </xsl:when>
      <xsl:when test="contains($options, 'i')">
        <xsl:value-of select="9999 - $year"/>
      </xsl:when>
      <xsl:otherwise>
        <xsl:value-of select="$year"/>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Format source type. -->
  <xsl:template name="format-sourcetype">
    <!-- The source type. -->
    <xsl:param name="type"/>
    <!-- Options (s: use pre-defined string, u: uppercase, l: lowercase) -->
    <xsl:param name="options"/>

    <!-- Check if the string needs replacement. -->
    <xsl:variable name="stype">
      <xsl:choose>
        <xsl:when test="contains($options, 's') and string-length(msxsl:node-set($data)/strings/sourcetypes/sourcetype[@type = $type]) > 0">
          <xsl:value-of select="msxsl:node-set($data)/strings/sourcetypes/sourcetype[@type = $type]"/>
        </xsl:when>
        <xsl:otherwise>
          <xsl:value-of select="$type"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <!-- Adjust the case. -->
    <xsl:choose>
      <xsl:when test="contains($options, 'u')">
        <xsl:call-template name="upper-case">
          <xsl:with-param name="string" select="$type"/>
        </xsl:call-template>
      </xsl:when>
      <xsl:when test="contains($options, 'l')">
        <xsl:call-template name="lower-case">
          <xsl:with-param name="string" select="$type"/>
        </xsl:call-template>
      </xsl:when>
      <xsl:otherwise>
        <xsl:value-of select="$stype"/>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Formats a page or a range of pages. -->
  <xsl:template name="format-pages">
    <!-- A single page number or a range of page numbers. -->
    <xsl:param name="pages"/>
    <!-- Options (single page prefix:multi page prefix:extra options). -->
    <xsl:param name="options" select="'p. :pp. '"/>

    <!-- Retrieve the single page prefix. -->
    <xsl:variable name="singlePagePrefix">
      <xsl:call-template name="substring-before-ex">
        <xsl:with-param name="string" select="$options"/>
        <xsl:with-param name="delimeter" select="':'"/>
      </xsl:call-template>
    </xsl:variable>

    <!-- Retrieve the multi page prefix. -->
    <xsl:variable name="multiPagePrefix">
      <xsl:call-template name="substring-before-ex">
        <xsl:with-param name="string" select="substring-after($options, ':')"/>
        <xsl:with-param name="delimeter" select="':'"/>
      </xsl:call-template>
    </xsl:variable>

    <!-- Retrieve the remaining options. -->
    <xsl:variable name="extraOptions" select="substring-after(substring-after($options, ':'), ':')"/>

    <!-- A list with all possible multi page separators. (e.g. dash, en-dash, colon, ...) -->
    <!-- This should be retrieved from a setting element in the data variable. -->
    <xsl:variable name="multiPageSeparators">
      <xsl:value-of select="'&#x002d;&#x003a;&#x2010;&#x2011;&#x2012;&#x2013;&#x8210;&#x8211;'"/>
    </xsl:variable>

    <!-- Find the multi page separator in use. -->
    <xsl:variable name="multiPageSeparator">
      <xsl:value-of select="substring(translate($pages, translate($pages, $multiPageSeparators, ''), ''), 1, 1)"/>
    </xsl:variable>

    <xsl:if test="string-length($pages) > 0">
      <!-- Check if this is about a single page, or a range of them to get the correct prefix. -->
      <xsl:choose>
        <!-- Contains multiple pages but no consecutive ones. -->
        <xsl:when test="contains($pages, ',') and string-length($multiPageSeparator) = 0">
          <xsl:value-of select="$multiPagePrefix"/>
          <xsl:value-of select="$pages"/>
        </xsl:when>
        <!-- Single page (does not contain a multi page separator). -->
        <xsl:when test="string-length($multiPageSeparator) = 0">
          <xsl:value-of select="$singlePagePrefix"/>
          <xsl:value-of select="$pages"/>
        </xsl:when>
        <!-- Contains multiple consecutive pages which needs to be abbreviated. -->
        <xsl:when test="contains($extraOptions, 'a')">
          <xsl:value-of select="$multiPagePrefix"/>
          <xsl:call-template name="abbreviate-pages">
            <xsl:with-param name="pages" select="$pages"/>
            <xsl:with-param name="size" select="concat('0', translate($extraOptions, translate($extraOptions, '0123456789', ''), ''))"/>
            <xsl:with-param name="separator" select="$multiPageSeparator"/>
          </xsl:call-template>
        </xsl:when>
        <!-- Contains multiple consecutive pages which needs to be extended. -->
        <xsl:when test="contains($extraOptions, 'e')">
          <xsl:value-of select="$multiPagePrefix"/>
          <xsl:call-template name="extend-pages">
            <xsl:with-param name="pages" select="$pages"/>
            <xsl:with-param name="separator" select="$multiPageSeparator"/>
          </xsl:call-template>
        </xsl:when>
        <!-- Contains multiple consecutive pages of which only the first page needs to be displayed. -->
        <xsl:when test="contains($extraOptions, 'f')">
          <xsl:value-of select="$multiPagePrefix"/>
          <!-- Or singlePagePrefix? -->
          <xsl:call-template name="first-page">
            <xsl:with-param name="pages" select="$pages"/>
            <xsl:with-param name="separator" select="$multiPageSeparator"/>
          </xsl:call-template>
        </xsl:when>
        <!-- Multiple pages, no special handling required. -->
        <xsl:otherwise>
          <xsl:value-of select="$multiPagePrefix"/>
          <xsl:value-of select="$pages"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:if>

  </xsl:template>

  <!-- Abbreviates a range of page numbers. (e.g. 315-317 becomes 315-7) -->
  <xsl:template name="abbreviate-pages">
    <!-- A range of pages with either '-' or ':' as a separator. -->
    <xsl:param name="pages"/>
    <!-- Minimum size of the last part. (e.g.: 2 -> 315-317 becomes 315-17) -->
    <xsl:param name="size" select="'0'"/>
    <!-- The multi page separator. -->
    <xsl:param name="separator"/>

    <xsl:choose>
      <!-- Only try to abbreviate if there is a separator. -->
      <xsl:when test="string-length($separator) > 0">

        <xsl:call-template name="abbreviate-pages-part-2">
          <xsl:with-param name="firstPage" select="substring-before($pages, $separator)"/>
          <xsl:with-param name="lastPage" select="substring-after($pages, $separator)"/>
          <xsl:with-param name="separator" select="$separator"/>
          <xsl:with-param name="size" select="$size"/>
        </xsl:call-template>

      </xsl:when>
      <!-- There is no separator, just return everything. -->
      <xsl:otherwise>
        <xsl:value-of select="$pages"/>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Recursive helper template for abbreviate-pages. -->
  <xsl:template name="abbreviate-pages-part-2">
    <xsl:param name="firstPage"/>
    <xsl:param name="lastPage"/>
    <xsl:param name="separator" select="'-'"/>
    <xsl:param name="position" select="1"/>
    <xsl:param name="size"/>

    <xsl:choose>
      <xsl:when test="string-length($firstPage) != string-length($lastPage)">
        <!-- If both page numbers do not contain the same amount of numbers, there is no point in continuing. -->
        <!-- Note that this check should only happen once and could be optimized if required. -->
        <xsl:value-of select="$firstPage"/>
        <xsl:value-of select="$separator"/>
        <xsl:value-of select="$lastPage"/>
      </xsl:when>
      <xsl:when test="substring($firstPage, $position, 1) = substring($lastPage, $position, 1) and string-length(substring($lastPage, $position)) > $size">
        <!-- Recursive repeat until the first non-matching number is found or the remainder gets too short. -->
        <xsl:call-template name="abbreviate-pages-part-2">
          <xsl:with-param name="firstPage" select="$firstPage"/>
          <xsl:with-param name="lastPage" select="$lastPage"/>
          <xsl:with-param name="separator" select="$separator"/>
          <xsl:with-param name="position" select="$position + 1"/>
          <xsl:with-param name="size" select="$size"/>
        </xsl:call-template>
      </xsl:when>
      <xsl:otherwise>
        <!-- The shortest version was found, display it. -->
        <xsl:value-of select="$firstPage"/>
        <xsl:value-of select="$separator"/>
        <xsl:value-of select="substring($lastPage, $position)"/>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

  <!-- Extends a range of page numbers. (e.g. 315-7 becomes 315-317). -->
  <xsl:template name="extend-pages">
    <!-- A range of pages with either '-' or ':' as a separator. -->
    <xsl:param name="pages"/>
    <!-- The multi page separator. -->
    <xsl:param name="separator"/>

    <xsl:choose>
      <!-- Only try to extend if there is a separator. -->
      <xsl:when test="string-length($separator) > 0">
        <xsl:variable name="firstPage" select="substring-before($pages, $separator)"/>
        <xsl:variable name="lastPage" select="substring-after($pages, $separator)"/>

        <!-- Display the first page. -->
        <xsl:value-of select="$firstPage"/>

        <!-- Display the separator. -->
        <xsl:value-of select="$separator"/>

        <!-- Display leading extension of the last page if available. -->
        <xsl:if test="string-length($firstPage) > string-length($lastPage)">
          <xsl:value-of select="substring($firstPage, 1, string-length($firstPage) - string-length($lastPage))"/>
        </xsl:if>

        <!-- Display the last page. -->
        <xsl:value-of select="$lastPage"/>
      </xsl:when>
      <!-- There is no separator, just return everything. -->
      <xsl:otherwise>
        <xsl:value-of select="$pages"/>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Gets the first page of a range of page numbers. (e.g. 315-317 becomes 315) -->
  <xsl:template name="first-page">
    <!-- A range of pages. -->
    <xsl:param name="pages"/>
    <!-- A possible separator (if empty, ':' or '-' will be used. -->
    <xsl:param name="separator"/>

    <xsl:choose>
      <xsl:when test="string-length($separator) > 0">
        <xsl:value-of select="substring-before($pages, $separator)"/>
      </xsl:when>
      <xsl:when test="contains($pages, ':')">
        <xsl:value-of select="substring-before($pages, ':')"/>
      </xsl:when>
      <xsl:when test="contains($pages, '-')">
        <xsl:value-of select="substring-before($pages, '-')"/>
      </xsl:when>
      <xsl:otherwise>
        <xsl:value-of select="$pages"/>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Format a number. -->
  <xsl:template name="format-number">
    <!-- Number to format. -->
    <xsl:param name="number"/>
    <!-- Formatting options. (r: lower roman numerals, R: upper roman numerals) -->
    <xsl:param name="options" select="''"/>

    <xsl:choose>
      <xsl:when test="contains($options, 'r')">
        <xsl:number value="$number" format="i"/>
      </xsl:when>
      <xsl:when test="contains($options, 'R')">
        <xsl:number value="$number" format="I"/>
      </xsl:when>
      <xsl:otherwise>
        <xsl:value-of select="$number"/>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Format ordinal. -->
  <xsl:template name="format-ordinal">
    <!-- A number to convert to an ordinal. -->
    <xsl:param name="number"/>
    <!-- Options. -->
    <xsl:param name="options"/>

    <!-- Translate the number to digits only. -->
    <xsl:variable name="digitsOnly">
      <xsl:value-of select="translate($number, translate($number, '0123456789', ''), '')"/>
    </xsl:variable>

    <!-- Try to represent the input as a number. -->
    <xsl:variable name="asNumber">
      <xsl:choose>
        <!-- Use the available digits. -->
        <xsl:when test="string-length($digitsOnly) > 0">
          <xsl:value-of select="$digitsOnly"/>
        </xsl:when>
        <!-- Otherwise try to convert the number variable to a set of digits. -->
        <xsl:otherwise>
          <!-- Translate the ordinal into lower cases only. -->
          <xsl:variable name="num">
            <xsl:call-template name="lower-case">
              <xsl:with-param name="string" select="$number"/>
            </xsl:call-template>
          </xsl:variable>

          <xsl:choose>
            <xsl:when test="$num = 'first'">
              <xsl:text>1</xsl:text>
            </xsl:when>
            <xsl:when test="$num = 'second'">
              <xsl:text>2</xsl:text>
            </xsl:when>
            <xsl:when test="$num = 'third'">
              <xsl:text>3</xsl:text>
            </xsl:when>
            <xsl:when test="$num = 'fourth'">
              <xsl:text>4</xsl:text>
            </xsl:when>
            <xsl:when test="$num = 'fifth'">
              <xsl:text>5</xsl:text>
            </xsl:when>
            <xsl:when test="$num = 'sixth'">
              <xsl:text>6</xsl:text>
            </xsl:when>
            <xsl:when test="$num = 'seventh'">
              <xsl:text>7</xsl:text>
            </xsl:when>
            <xsl:when test="$num = 'eighth'">
              <xsl:text>8</xsl:text>
            </xsl:when>
            <xsl:when test="$num = 'nineth'">
              <xsl:text>9</xsl:text>
            </xsl:when>
            <xsl:when test="$num = 'tenth'">
              <xsl:text>10</xsl:text>
            </xsl:when>
          </xsl:choose>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <xsl:choose>
      <!-- If a number is available, format it. -->
      <xsl:when test="string-length($asNumber) > 0">
        <!-- Display the number. -->
        <xsl:call-template name="format-number">
          <xsl:with-param name="number" select="$asNumber"/>
          <xsl:with-param name="options" select="translate($options, translate($options, 'R', ''), '')"/>
        </xsl:call-template>

        <!-- Display the suffix. -->
        <xsl:call-template name="format-ordinal-suffix">
          <xsl:with-param name="number" select="$asNumber"/>
          <xsl:with-param name="options" select="$options"/>
        </xsl:call-template>
      </xsl:when>
      <!-- Otherwise just display the input again. -->
      <xsl:otherwise>
        <xsl:value-of select="$number"/>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Formats the suffix of an ordinal. -->
  <xsl:template name="format-ordinal-suffix">
    <!-- Number for which the ordinal suffix has to be retrieved. -->
    <xsl:param name="number"/>
    <!-- Formatting options. Currently only 's' is supported for printing the ordinal part in superscript. -->
    <xsl:param name="options"/>

    <!-- Only execute this routine if there is a number. -->
    <xsl:if test="string-length($number) > 0">

      <!-- Retrieve the suffix. -->
      <xsl:variable name="suffix">
        <xsl:choose>
          <xsl:when test="$number mod 100 = 11">th</xsl:when>
          <xsl:when test="$number mod 100 = 12">th</xsl:when>
          <xsl:when test="$number mod 100 = 13">th</xsl:when>
          <xsl:when test="$number mod 10 = 3">rd</xsl:when>
          <xsl:when test="$number mod 10 = 2">nd</xsl:when>
          <xsl:when test="$number mod 10 = 1">st</xsl:when>
          <xsl:otherwise>th</xsl:otherwise>
        </xsl:choose>
      </xsl:variable>

      <!-- Format and display the suffix. -->
      <xsl:choose>
        <!-- Put the suffix in superscript. -->
        <xsl:when test="contains($options, 's')">
          <xsl:text>&lt;span style='vertical-align: super;'&gt;</xsl:text>
          <xsl:value-of select="$suffix"/>
          <xsl:text>&lt;/span&gt;</xsl:text>
        </xsl:when>
        <!-- No special formatting required. -->
        <xsl:otherwise>
          <xsl:value-of select="$suffix"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:if>

  </xsl:template>

  <!-- Format month. -->
  <xsl:template name="format-month">
    <!-- Representation of a month. -->
    <xsl:param name="month"/>
    <!-- Formatting options. (s: use predefined string, i: invert (13-month), n: use 2 digits, R: use roman numeral, u: upper-case, l: lower-case). -->
    <xsl:param name="options"/>

    <!-- Check if the month needs to be inverted. -->
    <xsl:variable name="month2">
      <xsl:choose>
        <!-- Check for month inversion (13 - month). -->
        <xsl:when test="contains($options, 'i') and string(number($month)) != 'NaN'">
          <xsl:value-of select="13 - number($month)"/>
        </xsl:when>
        <!-- Otherwise, keep using the original value. -->
        <xsl:otherwise>
          <xsl:value-of select="$month"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <!-- Get the text to display. -->
    <xsl:variable name="month3">
      <xsl:choose>
        <!-- Check for month to string conversion. -->
        <xsl:when test="contains($options, 's') and string(number($month2)) != 'NaN' and string-length(msxsl:node-set($data)/strings/months/month[@number = number($month2)]) > 0">
          <xsl:value-of select="msxsl:node-set($data)/strings/months/month[@number = number($month2)]"/>
        </xsl:when>
        <!-- Check for month to roman numeral conversion. -->
        <xsl:when test="contains($options, 'R') and string(number($month2)) != 'NaN'">
          <xsl:number value="number($month2)" format="i"/>
        </xsl:when>
        <!-- Check for month to double digit conversion (1 -> 01). -->
        <xsl:when test="contains($options, 'n') and string(number($month2)) != 'NaN'">
          <!-- Add a leading zero if the month value only consists of 1 digit. -->
          <xsl:if test="2 > string-length($month2)">
            <xsl:text>0</xsl:text>
          </xsl:if>
          <xsl:value-of select="$month2"/>
        </xsl:when>
        <!-- Otherwise keep using the original value. -->
        <xsl:otherwise>
          <xsl:value-of select="$month2"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <!-- Adjust the case. -->
    <xsl:choose>
      <xsl:when test="contains($options, 'u')">
        <xsl:call-template name="upper-case">
          <xsl:with-param name="string" select="$month3"/>
        </xsl:call-template>
      </xsl:when>
      <xsl:when test="contains($options, 'l')">
        <xsl:call-template name="lower-case">
          <xsl:with-param name="string" select="$month3"/>
        </xsl:call-template>
      </xsl:when>
      <xsl:otherwise>
        <xsl:value-of select="$month3"/>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Format day. -->
  <xsl:template name="format-day">
    <!-- Day. -->
    <xsl:param name="day"/>
    <!-- Formatting options (o: ordinal, u: upper-case, l:lower-case, n: two digits, i: invert (32 - day). -->
    <xsl:param name="options"/>

    <!-- Check if the number should be inverted. -->
    <xsl:variable name="temp0">
      <xsl:choose>
        <xsl:when test="contains($options, 'i')">
          <xsl:value-of select="32 - number($day)"/>
        </xsl:when>
        <xsl:otherwise>
          <xsl:value-of select="$day"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <!-- Check if the number should always be presented by 2 digits. -->
    <xsl:variable name="temp1">
      <xsl:choose>
        <xsl:when test="contains($options, 'n') and 2 > string-length($temp0) ">
          <xsl:value-of select="concat('0', $temp0)"/>
        </xsl:when>
        <xsl:otherwise>
          <xsl:value-of select="$temp0"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <!-- Check if the number should be an ordinal. -->
    <xsl:variable name="temp2">
      <xsl:choose>
        <xsl:when test="contains($options, 'o')">
          <xsl:call-template name="format-ordinal">
            <xsl:with-param name="number" select="$temp1"/>
            <xsl:with-param name="options" select="translate($options, 's', 's')"/>
          </xsl:call-template>
        </xsl:when>
        <xsl:otherwise>
          <xsl:value-of select="$temp1"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <!-- Check if the number should be in uppercase or lowercase (only useful when represented as an ordinal). -->
    <xsl:variable name="temp3">
      <xsl:choose>
        <xsl:when test="contains($options, 'u')">
          <xsl:call-template name="upper-case">
            <xsl:with-param name="string" select="$temp2"/>
          </xsl:call-template>
        </xsl:when>
        <xsl:when test="contains($options, 'l')">
          <xsl:call-template name="lower-case">
            <xsl:with-param name="string" select="$temp2"/>
          </xsl:call-template>
        </xsl:when>
        <xsl:otherwise>
          <xsl:value-of select="$temp2"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <xsl:value-of select="$temp3"/>

  </xsl:template>

  <!-- Formats a given title. -->
  <!--   Note: in case the subtitle (s option) is requested, and there is none, the result will be empty. -->
  <xsl:template name="format-title">
    <!-- Title string. -->
    <xsl:param name="title"/>
    <!-- Delimeter between a title and its subtitle. By default, this is ':'. -->
    <xsl:param name="delimeter" select="':'"/>
    <!-- Leading articles which can be ignored when the titles get sorted. -->
    <xsl:param name="articles" select="'-A-AN-THE-'"/>
    <!-- Options string. (u = uppercase, l = lowercase, a = put xxxwords at the end, m = main title, s = subtitle, f = first word uppercase) -->
    <xsl:param name="options"/>

    <!-- Select the requested title part (main, sub, or full). -->
    <xsl:variable name="part">
      <xsl:choose>
        <!-- Main title part (or full title if there is no subtitle).-->
        <xsl:when test="contains($options, 'm')">

          <xsl:variable name="temp">
            <xsl:call-template name="substring-before-ex">
              <xsl:with-param name="string" select="$title"/>
              <xsl:with-param name="delimeter" select="$delimeter"/>
            </xsl:call-template>
          </xsl:variable>

          <xsl:value-of select="normalize-space($temp)"/>
        </xsl:when>
        <!-- Subtitle. Can be empty if there is none. -->
        <xsl:when test="contains($options, 's')">
          <xsl:value-of select="normalize-space(substring-after($title, $delimeter))"/>
        </xsl:when>
        <!-- Full title. -->
        <xsl:otherwise>
          <xsl:value-of select="$title"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <!-- If necessary, transform the title part to work for sorting. -->
    <xsl:variable name="sort">
      <xsl:choose>
        <xsl:when test="contains($options, 'a')">
          <!-- Get the first word. -->
          <xsl:variable name="temp1">
            <xsl:call-template name="substring-before-ex">
              <xsl:with-param name="string" select="$title"/>
              <xsl:with-param name="delimeter" select="$delimeter"/>
            </xsl:call-template>
          </xsl:variable>

          <!-- Capitalize it and surround it by dashes. -->
          <xsl:variable name="temp2">
            <xsl:text>-</xsl:text>
            <xsl:call-template name="upper-case">
              <xsl:with-param name="string" select="normalize-space($temp1)"/>
            </xsl:call-template>
            <xsl:text>-</xsl:text>
          </xsl:variable>

          <!-- Capitalize the possible start words to put at the end. -->
          <xsl:variable name="firstWords">
            <xsl:call-template name="upper-case">
              <xsl:with-param name="string" select="$articles"/>
            </xsl:call-template>
          </xsl:variable>

          <!-- Check if it is used. -->
          <xsl:choose>
            <xsl:when test="contains($firstWords, $temp2)">
              <xsl:value-of select="substring-after($part, ' ')"/>
              <xsl:text>, </xsl:text>
              <xsl:value-of select="normalize-space($temp1)"/>
            </xsl:when>
            <xsl:otherwise>
              <xsl:value-of select="$part"/>
            </xsl:otherwise>
          </xsl:choose>

        </xsl:when>
        <xsl:otherwise>
          <xsl:value-of select="$part"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <!-- Apply the correct casing to the requested title part. -->
    <xsl:variable name="casing">
      <xsl:choose>
        <!-- Entire title in upper case. -->
        <xsl:when test="contains($options, 'u')">
          <xsl:call-template name="upper-case">
            <xsl:with-param name="string" select="$sort"/>
          </xsl:call-template>
        </xsl:when>
        <!-- Entire title in lower case. -->
        <xsl:when test="contains($options, 'l')">
          <xsl:call-template name="lower-case">
            <xsl:with-param name="string" select="$sort"/>
          </xsl:call-template>
        </xsl:when>
        <!-- The first word in upper case. -->
        <xsl:when test="contains($options, 'f')">
          <!-- First word. -->
          <xsl:call-template name="upper-case">
            <xsl:with-param name="string">
              <!-- Get the first word (even if there is only one word.) -->
              <xsl:call-template name="substring-before-ex">
                <xsl:with-param name="string" select="$sort"/>
                <xsl:with-param name="delimeter" select="' '"/>
              </xsl:call-template>
            </xsl:with-param>
          </xsl:call-template>
          <!-- Space. -->
          <xsl:text> </xsl:text>
          <!-- Other words. -->
          <xsl:value-of select="substring-after($part, ' ')"/>
        </xsl:when>
        <!-- Do not adjust casing. -->
        <xsl:otherwise>
          <xsl:value-of select="$sort"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <!-- Return the result. -->
    <xsl:value-of select="$casing"/>

  </xsl:template>

  <!-- Cleans up a strings punctuation (part 1). -->
  <xsl:template name="clean-punctuation">
    <!-- String to clean up. -->
    <xsl:param name="string"/>

    <!-- First part of the cleaning functionality, used to remove leading punctuation. -->

    <xsl:if test="string-length($string) > 0">
      <xsl:choose>
        <!-- Handle leading punctuation. -->
        <xsl:when test="contains('!?.,;: ', substring($string, 1, 1))">
          <xsl:call-template name="clean-punctuation">
            <xsl:with-param name="string" select="substring($string, 2)"/>
          </xsl:call-template>
        </xsl:when>
        <!-- Handle tags. -->
        <xsl:when test="substring($string, 1, 1) = '&lt;'">
          <xsl:value-of select="substring-before($string, '&gt;')"/>
          <xsl:value-of select="'&gt;'"/>
          <xsl:call-template name="clean-punctuation">
            <xsl:with-param name="string" select="substring-after($string, '&gt;')"/>
          </xsl:call-template>
        </xsl:when>
        <xsl:otherwise>
          <!-- Handle non-leading punctuation issues. -->
          <xsl:call-template name="clean-punctuation-2">
            <xsl:with-param name="string" select="$string"/>
          </xsl:call-template>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:if>

  </xsl:template>

  <!-- Cleans up a strings punctuation (part 2). -->
  <xsl:template name="clean-punctuation-2">
    <!-- String to clean up. -->
    <xsl:param name="string"/>
    <!-- Previous punctuation character (empty means previous character wasn't a punctuation one). -->
    <xsl:param name="punctuation" select="''"/>
    <!-- Buffer with tags. -->
    <xsl:param name="tagbuffer" select="''"/>

    <!-- Second part of the cleaning functionality, used to solve any non-leading punctuation. -->

    <xsl:choose>
      <xsl:when test="string-length($string) > 0">
        <xsl:choose>
          <!-- Handle punctuation. -->
          <xsl:when test="contains('!?.,;: ', substring($string, 1, 1))">
            <xsl:choose>
              <!-- If there was previous punctuation, handle possible cleaning. -->
              <xsl:when test="$punctuation != ''">
                <xsl:choose>
                  <!-- When the last two punctuations are equal, get rid of one. -->
                  <xsl:when test="$punctuation = substring($string, 1, 1)">
                    <xsl:call-template name="clean-punctuation-2">
                      <xsl:with-param name="string" select="substring($string, 2)"/>
                      <xsl:with-param name="punctuation" select="$punctuation"/>
                      <xsl:with-param name="tagbuffer" select="$tagbuffer"/>
                    </xsl:call-template>
                  </xsl:when>
                  <!-- Handle punctuations followed by a period. -->
                  <xsl:when test="contains(' ,;:.', $punctuation) and substring($string, 1, 1) = '.'">
                    <xsl:value-of select="$tagbuffer"/>
                    <xsl:call-template name="clean-punctuation-2">
                      <xsl:with-param name="string" select="substring($string, 2)"/>
                      <xsl:with-param name="punctuation" select="'.'"/>
                    </xsl:call-template>
                  </xsl:when>
                  <!-- Handle punctuations with question marks and exclamation marks. -->
                  <xsl:when test="contains('!?', $punctuation) and contains('!?.', substring($string, 1, 1))">
                    <xsl:value-of select="$punctuation"/>
                    <xsl:value-of select="$tagbuffer"/>
                    <xsl:call-template name="clean-punctuation-2">
                      <xsl:with-param name="string" select="substring($string, 2)"/>
                    </xsl:call-template>
                  </xsl:when>
                  <!-- Non supported punctuation handling. Just display the result. -->
                  <xsl:otherwise>
                    <xsl:value-of select="$punctuation"/>
                    <xsl:value-of select="$tagbuffer"/>
                    <xsl:call-template name="clean-punctuation-2">
                      <xsl:with-param name="string" select="substring($string, 2)"/>
                      <xsl:with-param name="punctuation" select="substring($string, 1, 1)"/>
                    </xsl:call-template>
                  </xsl:otherwise>
                </xsl:choose>
              </xsl:when>
              <!-- Otherwise, there was no previous punctuation. -->
              <xsl:otherwise>
                <xsl:value-of select="$tagbuffer"/>
                <xsl:call-template name="clean-punctuation-2">
                  <xsl:with-param name="string" select="substring($string, 2)"/>
                  <xsl:with-param name="punctuation" select="substring($string, 1, 1)"/>
                </xsl:call-template>
              </xsl:otherwise>
            </xsl:choose>
          </xsl:when>
          <!-- Handle tags. -->
          <xsl:when test="substring($string, 1, 1) = '&lt;'">
            <xsl:call-template name="clean-punctuation-2">
              <xsl:with-param name="string" select="substring-after($string, '&gt;')"/>
              <xsl:with-param name="punctuation" select="$punctuation"/>
              <xsl:with-param name="tagbuffer" select="concat($tagbuffer, substring-before($string, '&gt;'), '&gt;')"/>
            </xsl:call-template>
          </xsl:when>
          <!-- Handle quotes. -->
          <xsl:when test="substring($string, 1, 1) = '&quot;'">
            <xsl:call-template name="clean-punctuation-2">
              <xsl:with-param name="string" select="substring($string, 2)"/>
              <xsl:with-param name="punctuation" select="$punctuation"/>
              <xsl:with-param name="tagbuffer" select="concat($tagbuffer, '&quot;')"/>
            </xsl:call-template>
          </xsl:when>
          <!-- Handle remainder of the string. -->
          <xsl:otherwise>
            <xsl:value-of select="$punctuation"/>
            <xsl:value-of select="$tagbuffer"/>
            <xsl:value-of select="substring($string, 1, 1)"/>
            <xsl:call-template name="clean-punctuation-2">
              <xsl:with-param name="string" select="substring($string, 2)"/>
            </xsl:call-template>
          </xsl:otherwise>
        </xsl:choose>
      </xsl:when>
      <!-- End of the cleaning operation. -->
      <xsl:otherwise>
        <xsl:value-of select="$punctuation"/>
        <xsl:value-of select="$tagbuffer"/>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>


  <!-- The set of lower case characters used to do case conversions. -->
  <xsl:variable name="lowercase" select="'abcdefghijklmnopqrstuvwxyz&#224;&#225;&#226;&#227;&#228;&#229;&#230;&#231;&#232;&#233;&#234;&#235;&#236;&#237;&#238;&#239;&#241;&#242;&#243;&#244;&#245;&#246;&#249;&#250;&#251;&#252;'"/>

  <!-- The set of upper case characters used to do case conversions. -->
  <xsl:variable name="uppercase" select="'ABCDEFGHIJKLMNOPQRSTUVWXYZ&#192;&#193;&#194;&#195;&#196;&#197;&#198;&#199;&#200;&#201;&#202;&#203;&#204;&#205;&#206;&#207;&#209;&#210;&#211;&#212;&#213;&#214;&#217;&#218;&#219;&#220;'"/>

  <!-- The set of punctuation characters used as word delimeters in a string. -->
  <xsl:variable name="punctuation" select="'&#9;&#13;&#160;&#32;.,:;!?&#34;&#8216;&#8217;&#8218;&#8220;&#8221;&#8222;&#171;&#187;()[]&lt;&gt;{}'"/>

  <!-- Converts a string to upper case characters only. -->
  <xsl:template name="upper-case">
    <!-- String with characters to convert. -->
    <xsl:param name="string"/>

    <!-- 
         Word 2007 does not handle text-transform when importing html. 
         A text-transform element set to uppercase works but it is not
         supported.
      -->

    <xsl:value-of select="translate($string, $lowercase, $uppercase)"/>
  </xsl:template>

  <!-- Converts a string to lower case characters only. -->
  <xsl:template name="lower-case">
    <!-- String with characters to convert. -->
    <xsl:param name="string"/>

    <!-- Word 2007 does not handle text-transform when importing html. -->

    <xsl:value-of select="translate($string, $uppercase, $lowercase)"/>
  </xsl:template>

  <!-- An extended version of substring-before, returning the entire string if it does not contain the delimiter. -->
  <xsl:template name="substring-before-ex">
    <!-- String to get the substring from. -->
    <xsl:param name="string"/>
    <!-- Delimeter to check for. -->
    <xsl:param name="delimeter"/>

    <xsl:choose>
      <xsl:when test="contains($string, $delimeter)">
        <xsl:value-of select="substring-before($string, $delimeter)"/>
      </xsl:when>
      <xsl:otherwise>
        <xsl:value-of select="$string"/>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

  <!-- Retrieves the substring of a string after the last occurence of a symbol. -->
  <xsl:template name="substring-after-last">
    <!-- String to find the substring in. -->
    <xsl:param name="string"/>
    <!-- Separator symbol. -->
    <xsl:param name="symbol"/>

    <xsl:choose>
      <!-- If the string contains the symbol... -->
      <xsl:when test="contains($string, $symbol)">
        <!-- .. call the template recursively... -->
        <xsl:call-template name="substring-after-last">
          <!-- ... with the string being the string after the symbol ... -->
          <xsl:with-param name="string" select="substring-after($string, $symbol)"/>
          <!-- ... and the symbol being the same as before. -->
          <xsl:with-param name="symbol" select="$symbol"/>
        </xsl:call-template>
      </xsl:when>
      <!-- Otherwise, return the value of the string. -->
      <xsl:otherwise>
        <xsl:value-of select="$string"/>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Retrieves the substring of a string before the last occurence of a symbol. -->
  <xsl:template name="substring-before-last">
    <!-- String to find the substring in. -->
    <xsl:param name="string"/>
    <!-- Separator symbol. -->
    <xsl:param name="symbol"/>

    <!-- If the string contains the symbol ... -->
    <xsl:if test="contains($string, $symbol)">
      <!-- Get the part before the symbol. -->
      <xsl:copy-of select="substring-before($string, $symbol)"/>

      <xsl:variable name="temp" select="substring-after($string, $symbol)"/>

      <!-- If the symbol occurs another time in the string ... -->
      <xsl:if test="contains($temp, $symbol)">
        <!-- ... display the symbol ... -->
        <xsl:copy-of select="$symbol"/>

        <!-- ... and call the function recursively. -->
        <xsl:call-template name="substring-before-last">
          <xsl:with-param name="string" select="$temp"/>
          <xsl:with-param name="symbol" select="$symbol"/>
        </xsl:call-template>
      </xsl:if>
    </xsl:if>

  </xsl:template>

  <!-- BibWord extensions. -->
  <xsl:template name="bibword-extensions">

    <!-- Extends the b:Source elements to apply the BibWord extensions. -->
    <xsl:variable name="extended">

      <!-- Create a b:BibWord element. -->
      <b:BibWord>
        <!-- Extend all the b:Source elements with a sortkey. -->
        <xsl:for-each select="/b:BibWord/b:Source">
          <b:Source>
            <!-- Copy all elements with the exception of any previously defined BibOrder or YearSuffix. -->
            <xsl:for-each select="./*">
              <xsl:if test="local-name() != 'BibOrder' and local-name() != 'YearSuffix'">
                <xsl:copy-of select="."/>
              </xsl:if>
            </xsl:for-each>

            <xsl:variable name="t1" select="./b:Type"/>
            <xsl:variable name="t2" select="./b:SourceType"/>

            <!-- Add a sorting key. -->
            <xsl:call-template name="create-sortkey">
              <xsl:with-param name="source" select="."/>
            </xsl:call-template>

            <!-- Add year suffix requirements. -->
            <b:YSReq>

              <xsl:variable name="key">
                <xsl:choose>
                  <!-- First try type. -->
                  <xsl:when test="string-length(msxsl:node-set($data)/extensions/source[@type = $t1]/yearsuffix) > 0">
                    <xsl:call-template name="format-source">
                      <xsl:with-param name="format" select="msxsl:node-set($data)/extensions/source[@type = $t1]/yearsuffix"/>
                      <xsl:with-param name="source" select="."/>
                    </xsl:call-template>
                  </xsl:when>
                  <!-- Then try source type. -->
                  <xsl:when test="string-length(msxsl:node-set($data)/extensions/source[@type = $t2]/yearsuffix) > 0">
                    <xsl:call-template name="format-source">
                      <xsl:with-param name="format" select="msxsl:node-set($data)/extensions/source[@type = $t2]/yearsuffix"/>
                      <xsl:with-param name="source" select="."/>
                    </xsl:call-template>
                  </xsl:when>
                  <!-- Finally just use reference order. -->
                  <xsl:otherwise>
                    <xsl:value-of select="substring(concat('00000', ./b:RefOrder), string-length(./b:RefOrder) + 1, 5)"/>
                  </xsl:otherwise>
                </xsl:choose>
              </xsl:variable>

              <!-- The only reason to put this in a separate step is to do 'disable-output-escaping'. -->
              <xsl:call-template name="upper-case">
                <xsl:with-param name ="string">
                  <xsl:value-of select="$key" disable-output-escaping="yes"/>
                </xsl:with-param>
              </xsl:call-template>
            </b:YSReq>

          </b:Source>
        </xsl:for-each>
      </b:BibWord>

    </xsl:variable>

    <!-- Sort the elements for BibOrder. -->
    <xsl:variable name="sortedForBibOrder">
      <b:BibWord xmlns:b="http://schemas.openxmlformats.org/officeDocument/2006/bibliography">
        <xsl:for-each select="msxsl:node-set($extended)/b:BibWord/b:Source">
          <xsl:sort select="b:SortKey" data-type="text"/>

          <b:Source>
            <!-- Copy all elements. -->
            <xsl:for-each select="./*">
              <xsl:copy-of select="."/>
            </xsl:for-each>
          </b:Source>

        </xsl:for-each>
      </b:BibWord>
    </xsl:variable>

    <!-- Add the BibOrder element. -->
    <xsl:variable name="withBibOrder">
      <b:BibWord xmlns:b="http://schemas.openxmlformats.org/officeDocument/2006/bibliography">
        <xsl:for-each select="msxsl:node-set($sortedForBibOrder)/b:BibWord/b:Source">
          <b:Source>
            <!-- Copy all elements. -->
            <xsl:for-each select="./*">
              <xsl:copy-of select="."/>
            </xsl:for-each>

            <!-- Add the BibOrder element. -->
            <b:BibOrder>
              <xsl:value-of select="position()"/>
            </b:BibOrder>
          </b:Source>
        </xsl:for-each>
      </b:BibWord>
    </xsl:variable>

    <!-- Sort the elements for YearSuffix. -->
    <xsl:variable name="sortedForYearSuffix">
      <b:BibWord xmlns:b="http://schemas.openxmlformats.org/officeDocument/2006/bibliography">
        <xsl:for-each select="msxsl:node-set($withBibOrder)/b:BibWord/b:Source">
          <!-- Sort by YSReq first to group entries which might require year suffices. -->
          <xsl:sort select="b:YSReq" data-type="text"/>
          <xsl:sort select="b:SortKey" data-type="text"/>

          <b:Source>
            <!-- Copy all elements. -->
            <xsl:for-each select="./*">
              <xsl:copy-of select="."/>
            </xsl:for-each>
          </b:Source>
        </xsl:for-each>
      </b:BibWord>
    </xsl:variable>

    <!-- Add the YearSuffix element. -->
    <b:BibWord xmlns:b="http://schemas.openxmlformats.org/officeDocument/2006/bibliography">
      <xsl:for-each select="msxsl:node-set($sortedForYearSuffix)/b:BibWord/b:Source">

        <b:Source>
          <!-- Copy all elements except for YSReq and SortKey. -->
          <xsl:for-each select="./*">
            <xsl:if test="local-name() != 'YSReq' and local-name() != 'SortKey'">
              <xsl:copy-of select="."/>
            </xsl:if>
          </xsl:for-each>

          <!-- Add the YearSuffix element. -->
          <b:YearSuffix>
            <xsl:variable name="current" select="./b:YSReq"/>
            <xsl:variable name="previous" select="preceding-sibling::b:Source[1]/b:YSReq"/>
            <xsl:variable name="next" select="following-sibling::b:Source[1]/b:YSReq"/>

            <xsl:choose>
              <!-- Continuation of a series. -->
              <xsl:when test="position() > 1 and $current = $previous">
                <xsl:call-template name="get-year-suffix">
                  <xsl:with-param name="index" select="position()"/>
                  <xsl:with-param name="bibWord" select="$sortedForYearSuffix"/>
                </xsl:call-template>
              </xsl:when>
              <!-- First in a series. -->
              <xsl:when test="last() > position() and $current = $next">
                <xsl:text>a</xsl:text>
              </xsl:when>
              <!-- Not part of a series, the element is empty. -->
              <xsl:otherwise>
              </xsl:otherwise>
            </xsl:choose>

          </b:YearSuffix>

        </b:Source>
      </xsl:for-each>
    </b:BibWord>

  </xsl:template>

  <!-- Gets the year suffix for certain elements. -->
  <xsl:template name="get-year-suffix">
    <xsl:param name="suffixIndex" select="1"/>
    <xsl:param name="index"/>
    <xsl:param name="bibWord"/>

    <xsl:choose>
      <xsl:when test="$index - $suffixIndex > 0 and msxsl:node-set($bibWord)/b:BibWord/b:Source[$index]/b:YSReq = msxsl:node-set($bibWord)/b:BibWord/b:Source[$index - $suffixIndex]/b:YSReq">
        <xsl:call-template name="get-year-suffix">
          <xsl:with-param name="suffixIndex" select="$suffixIndex + 1"/>
          <xsl:with-param name="index" select="$index"/>
          <xsl:with-param name="bibWord" select="$bibWord"/>
        </xsl:call-template>
      </xsl:when>
      <xsl:otherwise>
        <xsl:value-of select="substring('abcdefghijklmnopqrstuvwxyz', $suffixIndex, 1)"/>
      </xsl:otherwise>
    </xsl:choose>

  </xsl:template>

  <!-- Creates a b:SortKey element for a given source. -->
  <xsl:template name="create-sortkey">
    <!-- The source element to create a b:SortKey element for. -->
    <xsl:param name="source"/>

    <!-- Retrieve the format string depending on the type of source. -->
    <xsl:variable name="formatstring">
      <xsl:choose>
        <!-- Placeholders. -->
        <xsl:when test="string-length($source/b:SourceType) = 0 and string-length(msxsl:node-set($data)/bibliography/source[@type = 'Placeholder']/format) > 0">
          <xsl:value-of select="msxsl:node-set($data)/bibliography/source[@type = 'Placeholder']/sortkey"/>
        </xsl:when>
        <!-- Type. (BibWord type overriding mechanism) -->
        <xsl:when test="string-length($source/b:Type) > 0 and string-length(msxsl:node-set($data)/bibliography/source[@type = $source/b:Type]/format) > 0 ">
          <xsl:value-of select="msxsl:node-set($data)/bibliography/source[@type = $source/b:Type]/sortkey"/>
        </xsl:when>
        <!-- SourceType. (Normal type) -->
        <xsl:otherwise>
          <xsl:value-of select="msxsl:node-set($data)/bibliography/source[@type = $source/b:SourceType]/sortkey"/>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <!-- Process the actual format string. -->
    <xsl:variable name="sortkey">
      <xsl:call-template name="format-source">
        <xsl:with-param name="format" select="$formatstring"/>
        <xsl:with-param name="source" select="$source"/>
      </xsl:call-template>
    </xsl:variable>

    <!-- Output. -->
    <b:SortKey>
      <xsl:choose>
        <!-- If the sortkey is not empty, convert it to uppercase and use that. -->
        <xsl:when test="string-length($sortkey) > 0">
          <xsl:call-template name="upper-case">
            <xsl:with-param name ="string">
              <xsl:value-of select="$sortkey" disable-output-escaping="yes"/>
            </xsl:with-param>
          </xsl:call-template>
        </xsl:when>
        <!-- Otherwise, use a 5 digit version of the RefOrder value. -->
        <xsl:otherwise>
          <xsl:value-of select="substring(concat('00000', $source/b:RefOrder), string-length($source/b:RefOrder) + 1, 5)"/>
        </xsl:otherwise>
      </xsl:choose>
    </b:SortKey>

  </xsl:template>

  <!-- Informative variable indicating which version of BibWord this is. -->
  <xsl:variable name="version">
    <xsl:text>2.9</xsl:text>
  </xsl:variable>
</xsl:stylesheet>