<?xml version="1.0" encoding="UTF-8"?>
<!--
  /=====================================================================\ 
  |  LaTeXML-bib.rnc                                                    |
  | RelaxNG model for LaTeXML generated documents                       |
  |=====================================================================|
  | Part of LaTeXML:                                                    |
  |  Public domain software, produced as part of work done by the       |
  |  United States Government & not subject to copyright in the US.     |
  |=====================================================================|
  | Bruce Miller <bruce.miller@nist.gov>                        #_#     |
  | http://dlmf.nist.gov/LaTeXML/                              (o o)    |
  \=========================================================ooo==U==ooo=/
-->
<grammar ns="http://dlmf.nist.gov/LaTeXML" xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0" xmlns="http://relaxng.org/ns/structure/1.0">
  <!-- Would be nice to use somebody elses already-developed DTD... -->
  <!--
    Some notes:
    There're two classes of things here:
    bibentry : which would be the translation of a .bib file
    bibitem  : which would be the formatted items in a latex bibliography environment.
             This latter has typically lost much information during formatting.
  -->
  <define name="biblist">
    <element name="biblist">
      <a:documentation>A list of bibliographic \elementref{bibentry} or \elementref{bibitem}.</a:documentation>
      <ref name="biblist_attributes"/>
      <ref name="biblist_model"/>
    </element>
  </define>
  <define name="biblist_attributes">
    <a:documentation>Attributes for \elementref{biblist}.</a:documentation>
    <ref name="Common.attributes"/>
  </define>
  <define name="biblist_model">
    <a:documentation>Content model for \elementref{biblist}.</a:documentation>
    <zeroOrMore>
      <choice>
        <ref name="bibentry"/>
        <ref name="bibitem"/>
      </choice>
    </zeroOrMore>
  </define>
  <!--
    ======================================================================
    bibitem is the formatted, presentation, form, typically information has been lost;
    it basically contains a biblabel and several bibblock's
    ======================================================================
  -->
  <define name="bibitem">
    <element name="bibitem">
      <a:documentation>A formatted bibliographic item, typically as written explicit
in a LaTeX article. This has generally lost most of the semantics
present in the BibTeX data.</a:documentation>
      <ref name="bibitem_attributes"/>
      <ref name="bibitem_model"/>
    </element>
  </define>
  <define name="bibitem_attributes">
    <a:documentation>Attributes for \elementref{bibitem}.</a:documentation>
    <ref name="Common.attributes"/>
    <ref name="ID.attributes"/>
    <optional>
      <attribute name="key">
        <a:documentation>The unique key for this object; this key is referenced by the
\attr{bibrefs} attribute of \elementref{bibref}.</a:documentation>
      </attribute>
    </optional>
  </define>
  <define name="bibitem_model">
    <a:documentation>Content model for \elementref{bibitem}.</a:documentation>
    <optional>
      <ref name="tags"/>
    </optional>
    <zeroOrMore>
      <ref name="bibblock"/>
    </zeroOrMore>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bibblock">
    <element name="bibblock">
      <a:documentation>A block of data appearing within a \elementref{bibitem}.</a:documentation>
      <ref name="bibblock_attributes"/>
      <ref name="bibblock_model"/>
    </element>
  </define>
  <define name="bibblock_attributes">
    <a:documentation>Attributes for \elementref{bibblock}.</a:documentation>
    <empty/>
  </define>
  <define name="bibblock_model">
    <a:documentation>Content model for \elementref{bibblock}.</a:documentation>
    <ref name="Flow.model"/>
  </define>
  <!--
    bibblock's model was this:
     Inline.model }
  -->
  <!--
    ======================================================================
    bibentry is the (more) semantic form, typically extracted from bibtex.
    ======================================================================
  -->
  <define name="bibentry">
    <element name="bibentry">
      <a:documentation>Semantic representation of a bibliography entry, 
typically resulting from parsing BibTeX</a:documentation>
      <ref name="bibentry_attributes"/>
      <ref name="bibentry_model"/>
    </element>
  </define>
  <define name="bibentry.type">
    <choice>
      <value>article</value>
      <value>book</value>
      <value>booklet</value>
      <value>conference</value>
      <value>inbook</value>
      <value>incollection</value>
      <value>inproceedings</value>
      <value>manual</value>
      <value>mastersthesis</value>
      <value>misc</value>
      <value>phdthesis</value>
      <value>proceedings</value>
      <value>techreport</value>
      <value>unpublished</value>
      <value>report</value>
      <value>thesis</value>
      <value>website</value>
      <value>software</value>
      <value>periodical</value>
      <value>collection</value>
      <value>collection.article</value>
      <value>proceedings.article</value>
      <text/>
    </choice>
  </define>
  <define name="bibentry_attributes">
    <a:documentation>Attributes for \elementref{bibentry}.</a:documentation>
    <ref name="Common.attributes"/>
    <ref name="ID.attributes"/>
    <attribute name="key">
      <a:documentation>The unique key for this object; this key is referenced by the
\attr{bibrefs} attribute of \elementref{bibref}.</a:documentation>
    </attribute>
    <attribute name="type">
      <a:documentation>The type of the referenced object. The values are a superset of
those types recognized by BibTeX, but is also open-ended for extensibility.</a:documentation>
      <ref name="bibentry.type"/>
    </attribute>
  </define>
  <define name="bibentry_model">
    <a:documentation>Content model for \elementref{bibentry}.</a:documentation>
    <zeroOrMore>
      <ref name="Bibentry.class"/>
    </zeroOrMore>
  </define>
  <!-- ====================================================================== -->
  <!-- Name related information -->
  <define name="bib-name">
    <element name="bib-name">
      <a:documentation>Name of some participant in creating a bibliographic entry.</a:documentation>
      <ref name="bib-name_attributes"/>
      <ref name="bib-name_model"/>
    </element>
  </define>
  <define name="bib-name_attributes">
    <a:documentation>Attributes for \elementref{bib-name}.</a:documentation>
    <ref name="Common.attributes"/>
    <optional>
      <attribute name="role">
        <a:documentation>The role that this participant played in creating the entry.</a:documentation>
        <choice>
          <value>author</value>
          <value>editor</value>
          <value>translator</value>
          <text/>
        </choice>
      </attribute>
    </optional>
  </define>
  <define name="bib-name_model">
    <a:documentation>Content model for \elementref{bib-name}.</a:documentation>
    <ref name="Bibname.model"/>
  </define>
  <define name="Bibname.model">
    <a:documentation>The content model of the bibliographic name fields (\elementref{bib-name})</a:documentation>
    <ref name="surname"/>
    <optional>
      <ref name="givenname"/>
    </optional>
    <optional>
      <ref name="lineage"/>
    </optional>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="surname">
    <element name="surname">
      <a:documentation>Surname of a participant (\elementref{bib-name}).</a:documentation>
      <ref name="surname_attributes"/>
      <ref name="surname_model"/>
    </element>
  </define>
  <define name="surname_attributes">
    <a:documentation>Attributes for \elementref{surname}.</a:documentation>
    <empty/>
  </define>
  <define name="surname_model">
    <a:documentation>Content model for \elementref{surname}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="givenname">
    <element name="givenname">
      <a:documentation>Given name of a participant (\elementref{bib-name}).</a:documentation>
      <ref name="givenname_attributes"/>
      <ref name="givenname_model"/>
    </element>
  </define>
  <define name="givenname_attributes">
    <a:documentation>Attributes for \elementref{givenname}.</a:documentation>
    <empty/>
  </define>
  <define name="givenname_model">
    <a:documentation>Content model for \elementref{givenname}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="lineage">
    <element name="lineage">
      <a:documentation>Lineage of a participant (\elementref{bib-name}), eg. Jr. or similar.</a:documentation>
      <ref name="lineage_attributes"/>
      <ref name="lineage_model"/>
    </element>
  </define>
  <define name="lineage_attributes">
    <a:documentation>Attributes for \elementref{lineage}.</a:documentation>
    <empty/>
  </define>
  <define name="lineage_model">
    <a:documentation>Content model for \elementref{lineage}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- ====================================================================== -->
  <!-- Title related information -->
  <define name="bib-title">
    <element name="bib-title">
      <a:documentation>Title of a bibliographic entry.</a:documentation>
      <ref name="bib-title_attributes"/>
      <ref name="bib-title_model"/>
    </element>
  </define>
  <define name="bib-title_attributes">
    <a:documentation>Attributes for \elementref{bib-title}.</a:documentation>
    <ref name="Common.attributes"/>
  </define>
  <define name="bib-title_model">
    <a:documentation>Content model for \elementref{bib-title}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-subtitle">
    <element name="bib-subtitle">
      <a:documentation>Subtitle of a bibliographic entry.</a:documentation>
      <ref name="bib-subtitle_attributes"/>
      <ref name="bib-subtitle_model"/>
    </element>
  </define>
  <define name="bib-subtitle_attributes">
    <a:documentation>Attributes for \elementref{bib-subtitle}.</a:documentation>
    <ref name="Common.attributes"/>
  </define>
  <define name="bib-subtitle_model">
    <a:documentation>Content model for \elementref{bib-subtitle}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-key">
    <element name="bib-key">
      <a:documentation>Unique key of a bibliographic entry.</a:documentation>
      <ref name="bib-key_attributes"/>
      <ref name="bib-key_model"/>
    </element>
  </define>
  <define name="bib-key_attributes">
    <a:documentation>Attributes for \elementref{bib-key}.</a:documentation>
    <ref name="Common.attributes"/>
  </define>
  <define name="bib-key_model">
    <a:documentation>Content model for \elementref{bib-key}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-type">
    <element name="bib-type">
      <a:documentation>Type of a bibliographic entry.</a:documentation>
      <ref name="bib-type_attributes"/>
      <ref name="bib-type_model"/>
    </element>
  </define>
  <define name="bib-type_attributes">
    <a:documentation>Attributes for \elementref{bib-type}.</a:documentation>
    <ref name="Common.attributes"/>
  </define>
  <define name="bib-type_model">
    <a:documentation>Content model for \elementref{bib-type}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-date">
    <element name="bib-date">
      <a:documentation>Date of a bibliographic entry.</a:documentation>
      <ref name="bib-date_attributes"/>
      <ref name="bib-date_model"/>
    </element>
  </define>
  <define name="bib-date_attributes">
    <a:documentation>Attributes for \elementref{bib-date}.</a:documentation>
    <ref name="Common.attributes"/>
    <optional>
      <attribute name="role">
        <a:documentation>characterizes what happened on the given date</a:documentation>
        <choice>
          <value>publication</value>
          <value>copyright</value>
          <text/>
        </choice>
      </attribute>
    </optional>
  </define>
  <define name="bib-date_model">
    <a:documentation>Content model for \elementref{bib-date}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-publisher">
    <element name="bib-publisher">
      <a:documentation>Publisher of a bibliographic entry.</a:documentation>
      <ref name="bib-publisher_attributes"/>
      <ref name="bib-publisher_model"/>
    </element>
  </define>
  <define name="bib-publisher_attributes">
    <a:documentation>Attributes for \elementref{bib-publisher}.</a:documentation>
    <ref name="Common.attributes"/>
  </define>
  <define name="bib-publisher_model">
    <a:documentation>Content model for \elementref{bib-publisher}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-organization">
    <element name="bib-organization">
      <a:documentation>Organization responsible for a bibliographic entry.</a:documentation>
      <ref name="bib-organization_attributes"/>
      <ref name="bib-organization_model"/>
    </element>
  </define>
  <define name="bib-organization_attributes">
    <a:documentation>Attributes for \elementref{bib-organization}.</a:documentation>
    <ref name="Common.attributes"/>
  </define>
  <define name="bib-organization_model">
    <a:documentation>Content model for \elementref{bib-organization}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-place">
    <element name="bib-place">
      <a:documentation>Location of publisher or event</a:documentation>
      <ref name="bib-place_attributes"/>
      <ref name="bib-place_model"/>
    </element>
  </define>
  <define name="bib-place_attributes">
    <a:documentation>Attributes for \elementref{bib-place}.</a:documentation>
    <ref name="Common.attributes"/>
  </define>
  <define name="bib-place_model">
    <a:documentation>Content model for \elementref{bib-place}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-related">
    <element name="bib-related">
      <a:documentation>A Related bibliographic object, such as the book or journal
that the current item is related to.</a:documentation>
      <ref name="bib-related_attributes"/>
      <ref name="bib-related_model"/>
    </element>
  </define>
  <define name="bib-related_attributes">
    <a:documentation>Attributes for \elementref{bib-related}.</a:documentation>
    <ref name="Common.attributes"/>
    <optional>
      <attribute name="type">
        <a:documentation>The type of this related entry.</a:documentation>
        <ref name="bibentry.type"/>
      </attribute>
    </optional>
    <optional>
      <attribute name="role">
        <a:documentation>How this object relates to the containing object.
Particularly important is \attrval{host} which indicates that
the outer object is a part of this object.</a:documentation>
        <choice>
          <value>host</value>
          <value>event</value>
          <value>original</value>
          <text/>
        </choice>
      </attribute>
    </optional>
    <optional>
      <attribute name="bibrefs">
        <a:documentation>If the bibrefs attribute is given, it is the key of another object in the bibliography,
and this element should be empty; otherwise the object should be described by
the content of the element.</a:documentation>
      </attribute>
    </optional>
  </define>
  <define name="bib-related_model">
    <a:documentation>Content model for \elementref{bib-related}.</a:documentation>
    <zeroOrMore>
      <ref name="Bibentry.class"/>
    </zeroOrMore>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-part">
    <element name="bib-part">
      <a:documentation>Describes how the current object is related to a related (\elementref{bib-related})
object, in particular page, part, volume numbers and similar.</a:documentation>
      <ref name="bib-part_attributes"/>
      <ref name="bib-part_model"/>
    </element>
  </define>
  <define name="bib-part_attributes">
    <a:documentation>Attributes for \elementref{bib-part}.</a:documentation>
    <ref name="Common.attributes"/>
    <optional>
      <attribute name="role">
        <a:documentation>indicates how the value partitions the containing object.</a:documentation>
        <choice>
          <value>pages</value>
          <value>part</value>
          <value>volume</value>
          <value>issue</value>
          <value>number</value>
          <value>chapter</value>
          <value>section</value>
          <value>paragraph</value>
          <text/>
        </choice>
      </attribute>
    </optional>
  </define>
  <define name="bib-part_model">
    <a:documentation>Content model for \elementref{bib-part}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!--
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
     
  -->
  <define name="bib-edition">
    <element name="bib-edition">
      <a:documentation>Edition of a bibliographic entry.</a:documentation>
      <ref name="bib-edition_attributes"/>
      <ref name="bib-edition_model"/>
    </element>
  </define>
  <define name="bib-edition_attributes">
    <a:documentation>Attributes for \elementref{bib-edition}.</a:documentation>
    <ref name="Common.attributes"/>
  </define>
  <define name="bib-edition_model">
    <a:documentation>Content model for \elementref{bib-edition}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-status">
    <element name="bib-status">
      <a:documentation>Status of a bibliographic entry.</a:documentation>
      <ref name="bib-status_attributes"/>
      <ref name="bib-status_model"/>
    </element>
  </define>
  <define name="bib-status_attributes">
    <a:documentation>Attributes for \elementref{bib-status}.</a:documentation>
    <ref name="Common.attributes"/>
  </define>
  <define name="bib-status_model">
    <a:documentation>Content model for \elementref{bib-status}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-identifier">
    <element name="bib-identifier">
      <a:documentation>Some form of document identfier. The content is descriptive.</a:documentation>
      <ref name="bib-identifier_attributes"/>
      <ref name="bib-identifier_model"/>
    </element>
  </define>
  <define name="bib-identifier_attributes">
    <a:documentation>Attributes for \elementref{bib-identifier}.</a:documentation>
    <ref name="Common.attributes"/>
    <ref name="Refable.attributes"/>
    <optional>
      <attribute name="scheme">
        <a:documentation>indicates what sort of identifier it is; it is open-ended for extensibility.</a:documentation>
        <choice>
          <value>doi</value>
          <value>issn</value>
          <value>isbn</value>
          <value>mr</value>
          <text/>
        </choice>
      </attribute>
    </optional>
    <optional>
      <attribute name="id">
        <a:documentation>the identifier.</a:documentation>
      </attribute>
    </optional>
  </define>
  <define name="bib-identifier_model">
    <a:documentation>Content model for \elementref{bib-identifier}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-review">
    <element name="bib-review">
      <a:documentation>Review of a bibliographic entry. The content is descriptive.</a:documentation>
      <ref name="bib-review_attributes"/>
      <ref name="bib-review_model"/>
    </element>
  </define>
  <define name="bib-review_attributes">
    <a:documentation>Attributes for \elementref{bib-review}.</a:documentation>
    <ref name="Common.attributes"/>
    <ref name="Refable.attributes"/>
    <optional>
      <attribute name="scheme">
        <a:documentation>indicates what sort of identifier it is; it is open-ended for extensibility.</a:documentation>
        <choice>
          <value>doi</value>
          <value>issn</value>
          <value>isbn</value>
          <value>mr</value>
          <text/>
        </choice>
      </attribute>
    </optional>
    <optional>
      <attribute name="id">
        <a:documentation>the identifier.</a:documentation>
      </attribute>
    </optional>
  </define>
  <define name="bib-review_model">
    <a:documentation>Content model for \elementref{bib-review}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-links">
    <element name="bib-links">
      <a:documentation>Links to other things like preprints, source code, etc.</a:documentation>
      <ref name="bib-links_attributes"/>
      <ref name="bib-links_model"/>
    </element>
  </define>
  <define name="bib-links_attributes">
    <a:documentation>Attributes for \elementref{bib-links}.</a:documentation>
    <ref name="Common.attributes"/>
  </define>
  <define name="bib-links_model">
    <a:documentation>Content model for \elementref{bib-links}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-language">
    <element name="bib-language">
      <a:documentation>Language of a bibliographic entry.</a:documentation>
      <ref name="bib-language_attributes"/>
      <ref name="bib-language_model"/>
    </element>
  </define>
  <define name="bib-language_attributes">
    <a:documentation>Attributes for \elementref{bib-language}.</a:documentation>
    <ref name="Common.attributes"/>
  </define>
  <define name="bib-language_model">
    <a:documentation>Content model for \elementref{bib-language}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-url">
    <element name="bib-url">
      <a:documentation>A URL for a bibliographic entry. The content is descriptive</a:documentation>
      <ref name="bib-url_attributes"/>
      <ref name="bib-url_model"/>
    </element>
  </define>
  <define name="bib-url_attributes">
    <a:documentation>Attributes for \elementref{bib-url}.</a:documentation>
    <ref name="Common.attributes"/>
    <ref name="Refable.attributes"/>
  </define>
  <define name="bib-url_model">
    <a:documentation>Content model for \elementref{bib-url}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-extract">
    <element name="bib-extract">
      <a:documentation>An extract from the referenced object.</a:documentation>
      <ref name="bib-extract_attributes"/>
      <ref name="bib-extract_model"/>
    </element>
  </define>
  <define name="bib-extract_attributes">
    <a:documentation>Attributes for \elementref{bib-extract}.</a:documentation>
    <ref name="Common.attributes"/>
    <optional>
      <attribute name="role">
        <a:documentation>Classify what kind of extract</a:documentation>
        <choice>
          <value>keywords</value>
          <value>abstract</value>
          <value>contents</value>
          <text/>
        </choice>
      </attribute>
    </optional>
  </define>
  <define name="bib-extract_model">
    <a:documentation>Content model for \elementref{bib-extract}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-note">
    <element name="bib-note">
      <a:documentation>Notes about a bibliographic entry.</a:documentation>
      <ref name="bib-note_attributes"/>
      <ref name="bib-note_model"/>
    </element>
  </define>
  <define name="bib-note_attributes">
    <a:documentation>Attributes for \elementref{bib-note}.</a:documentation>
    <ref name="Common.attributes"/>
    <optional>
      <attribute name="role">
        <a:documentation>Classify the kind of note</a:documentation>
        <choice>
          <value>annotation</value>
          <value>publication</value>
          <text/>
        </choice>
      </attribute>
    </optional>
  </define>
  <define name="bib-note_model">
    <a:documentation>Content model for \elementref{bib-note}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
  <define name="bib-data">
    <element name="bib-data">
      <a:documentation>Random data, not necessarily even text.
(future questions: should model be text or ANY? maybe should have encoding attribute?).</a:documentation>
      <ref name="bib-data_attributes"/>
      <ref name="bib-data_model"/>
    </element>
  </define>
  <define name="bib-data_attributes">
    <a:documentation>Attributes for \elementref{bib-data}.</a:documentation>
    <ref name="Common.attributes"/>
    <optional>
      <attribute name="role">
        <a:documentation>Classify the relationship of the data to the entry.</a:documentation>
      </attribute>
    </optional>
    <optional>
      <attribute name="type">
        <a:documentation>Classify the type of the data.</a:documentation>
      </attribute>
    </optional>
  </define>
  <define name="bib-data_model">
    <a:documentation>Content model for \elementref{bib-data}.</a:documentation>
    <ref name="Inline.model"/>
  </define>
  <!-- ====================================================================== -->
  <define name="Bibentry.class">
    <choice>
      <ref name="bib-name"/>
      <ref name="bib-title"/>
      <ref name="bib-subtitle"/>
      <ref name="bib-key"/>
      <ref name="bib-type"/>
      <ref name="bib-date"/>
      <ref name="bib-publisher"/>
      <ref name="bib-organization"/>
      <ref name="bib-place"/>
      <ref name="bib-part"/>
      <ref name="bib-related"/>
      <ref name="bib-edition"/>
      <ref name="bib-status"/>
      <ref name="bib-language"/>
      <ref name="bib-url"/>
      <ref name="bib-note"/>
      <ref name="bib-extract"/>
      <ref name="bib-identifier"/>
      <ref name="bib-review"/>
      <ref name="bib-links"/>
      <ref name="bib-data"/>
    </choice>
  </define>
</grammar>
<!-- ====================================================================== -->