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<!--  MODULE:    NLM Citation                                      -->
<!--  VERSION:   2.3                                               -->
<!--  DATE:      February 2007                                     -->
<!--                                                               -->
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<!--                    PUBLIC DOCUMENT TYPE DEFINITION            -->
<!--                        TYPICAL INVOCATION                     -->
<!--
"-//NLM//DTD NLM Citation v2.3 20070202//EN"
Delivered as file "nlmcitation.ent"                                -->
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<!-- SYSTEM:     Journal Publishing DTD of the                     -->
<!--             Archiving and Interchange DTD Suite               -->
<!--                                                               -->
<!-- PURPOSE:    This new DTD Suite module adds the model for the  -->
<!--             NLM Structured bibliographic citation. This model -->
<!--             The model loosely reflects the NLM's style, in    -->
<!--             that it allows the tagging of all "legal" NLM     --> 
<!--             citations and enforces the sequence in which      -->
<!--             content must appear if it is present. However,    -->
<!--             this model does not provide guidance on what      -->
<!--             information is required for each type of cited    -->
<!--             content.                                          -->
<!--                                                               -->
<!-- CONTAINS:   1) Content model for <nlm-citation>               -->
<!--                                                               -->
<!-- CREATED FOR:                                                  -->
<!--             Digital Archive of Journal Articles               -->
<!--             National Center for Biotechnology Information     -->
<!--                (NCBI)                                         -->
<!--             National Library of Medicine (NLM)                -->
<!--                                                               -->
<!-- ORIGINAL CREATION DATE:                                       -->
<!--             September 2004                                    -->
<!--                                                               -->
<!-- CREATED BY: Jeff Beck       (NCBI)                            -->
<!--             B. Tommie Usdin (Mulberry Technologies, Inc.)     -->
<!--             Deborah A. Lapeyre (Mulberry Technologies, Inc.)  -->
<!--                                                               -->
<!--             The Journal Publishing DTD is built from the      -->
<!--             Archiving and Interchange DTD Suite.              -->
<!--                                                               -->
<!--             Suggestions for refinements and enhancements to   -->
<!--             this DTD should be sent in email to:              -->
<!--                 publishing-dtd@ncbi.nlm.nih.gov               -->
<!-- ============================================================= -->

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<!--                    DTD VERSION/CHANGE HISTORY                 -->
<!-- ============================================================= -->
<!--

  Version  Reason/Occasion                   (who) vx.x (yyyy-mm-dd)

     =============================================================
     Version 2.3                       (DAL/BTU) v2.3 (2007-02-02)
     
     Enhancement Release (2.3) following the Working Group meetings 
     of Oct-Nov/2006-Jan/2007. No backward-incompatible changes.
     Archiving loosened even more. New structures for all the DTDs. 
     
  2. Updated public identifier to "v2.3 20070202//EN"          

     =============================================================
     Version 2.0                       (DAL/BTU) v2.0 (2004-07-30)
         
     
     Major requirement changes led to the new release, producing
     DTD version "2.0":
       a) Suite remodularization to meet new (and newly articulated)
          modularization requirements

  1. Created this module from material previously in the single
     journal publishing customization module (journalpubcustomize.ent)
     Created at version "v2.3 20070202"                            -->
             
             
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<!--                    NEW ELEMENT DECLARATIONS                   -->
<!--                    Declarations of elements that are new to   -->
<!--                    this DTD.                                  -->
<!--                    NOTE: All new structures must be mappable  -->
<!--                    to the archiving/interchange DTD and the   -->
<!--                    mapping should be described when the new   -->
<!--                    element is declared.                       -->
<!-- ============================================================= -->

                                                   
<!--                    NLM CITATION MODEL                         -->
<!--                    This structured citation model is provided
                        to assist users how are creating new content.
                        It loosely reflects the NLM's style, in that
                        it allows the tagging of all "legal" NLM 
                        citations and enforces the sequence in which
                        content must appear if it is present. However,
                        this model does not provide guidance on what
                        information is required for each type of 
                        cited content. 
                        
                        This model assumes that punctuation between
                        the parts of a citation will be generated 
                        on display or on export from the XML tagged
                        according to this DTD to XML for another use.
                        
                        In converting documents tagged to this
                        publishing DTD to the archiving/interchange
                        DTD the <nlm-citation> tag must be changed to
                        <citation> and all of the punctuation between
                        elements inside the citation must be inserted.
                                                                   -->
<!ELEMENT  nlm-citation   
                        ((person-group | collab)*, 
                         (article-title | trans-title)*, 
                         source?, patent?, trans-source?, year?, 
                         ((month?, day?, time-stamp?) | season?), 
                         access-date?, volume?, edition?, 
                         conf-name?, conf-date?, conf-loc?, 
                         (issue | supplement)*, publisher-loc?, 
                         publisher-name?, (fpage?, lpage?)*, 
                         page-count?, series?, comment*, pub-id*, 
                         annotation?)                                > 

<!ATTLIST  nlm-citation
             %citation-atts;                                         >


<!-- ================== End NLM Citation Module ================== -->
