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<ref> Reference Item

One item in a bibliographic list.
Attributes
content-type
specific-use

Multi-lang Attributes

lang-focus
lang-focus-custom
lang-group
lang-source
lang-source-custom
lang-translate
lang-variant
lang-variant-custom

Base Attributes

id
xml:base
xml:lang
Models and Context
May be contained in
<ref-list>
Description
One or more of any of:
Content Model
<!ELEMENT  ref          %ref-model;                                  >
Expanded Content Model

(citation-alternatives | element-citation | mixed-citation | nlm-citation)+

Tagged Samples
Mixed citation references 
...
<back>
 <ack>...</ack>
 <ref-list>
  <ref id="B1">
   <mixed-citation publication-type="commun" publication-format="web">
    <person-group person-group-type="author">
    <name><surname>Harris</surname>
    <given-names>Pat</given-names></name>
    </person-group>. <article-title>New Z39.50 resource</article-title> 
    [Internet]. <source>Message to: Karen Patrias</source>.
    <date-in-citation content-type="time-stamp"
    iso-8601-date="1998-02-27T13:18">1998 Feb 27, 1:18 pm</date-in-citation>
    [cited <date-in-citation content-type="access-date"
    iso-8601-date="1998-02-28">1998 Feb 28</date-in-citation>].
    [about 2 screens].</mixed-citation>
  </ref>
  <ref id="B2">...</ref>
  ...
 </ref-list>
</back>
...
Element citation references 
...
<back>
 <ack>...</ack>
 <ref-list>
  <ref id="B1">
   <element-citation publication-type="commun" 
     publication-format="web">
    <person-group person-group-type="author">
     <name><surname>Harris</surname>
      <given-names>Pat</given-names></name>
    </person-group>
    <article-title>New Z39.50 resource</article-title>
    <comment>[Internet]</comment>
    <source>Message to: Karen Patrias</source>
    <date-in-citation content-type="time-stamp"
      iso-8601-date="1998-02-27T13:18">1998 Feb 27,
     1:18 pm</date-in-citation>
    <date-in-citation content-type="access-date"
      iso-8601-date="1998-02-28">[cited 1998
     Feb 28]</date-in-citation>
    <comment>[about 2 screens]</comment>
   </element-citation>
  </ref>
  <ref id="B2">...</ref>
  ...
 </ref-list>
</back>
...
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