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<p class="tableOfContents"><strong>Table of Contents: <a href="/pubs/techbull/nd13/nd13_issue_cover.html">2013 NOVEMBER&#8211;DECEMBER No. 395</a></strong></p>
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<h1 class="articleH1">New PubModel for PubMed Citations</h1>
<p class="tbyearmonth">Knecht LS. New PubModel for PubMed Citations. NLM Tech Bull. 2013 Nov-Dec;(395):e2.</p>
<div class="articleactions">2013 November 08 <span class="status">[posted]</span>
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<p>In mid-June 2013, a new publication model (PubModel) called Electronic-eCollection was introduced for PubMed citations from electronic-only journals. The PubModel value is carried in the journal citation and is used for the citation display in PubMed. The new value Electronic-eCollection means an article is published electronically on a specific date (this date must include year, month, and day in numerical format) and then is also associated with an electronic collection date (akin to an issue; this date can be a year or a year and month, but never a year, month, and day). NLM determines the PubModel based on the data submitted by the publishers.
</p>
<p>A new display value of eCollection precedes the collection date information in a citation display. The specific article date will display after the journal title abbreviation while the collection date will display near the end of the source information (see <a href="#fig1">Figure 1</a>).
</p>
<a name="fig1"></a>
<div class="figure" style="width: 591px;"> <img src="graphics/pubmodel_fig1.png" alt="Screen capture of a sample display for journal citation with PubModel = Electronic-eCollection." title="Screen capture of a sample display for journal citation with PubModel = Electronic-eCollection" width="589" height="103" /><br /> <strong>Figure 1: Sample display for journal citation with <br />
PubModel = Electronic-eCollection.</strong></div>
<p>
This particular article cited in Figure 1 was published online on January 25, 2013, yet was included in the Volume 3, 2012 collection as deposited in PMC.
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<p>
See <a href="//www.nlm.nih.gov/bsd/licensee/elements_article_source.html">Use of Article and ArticleDate Attribute Values in Creating the Source Area of the MEDLINE/PubMed Citation Display</a> for documentation on all of the PubModel values.
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By
Lou Wave S. Knecht<br />
Bibliographic Services Division<br />
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<strong>Last updated:</strong> 08 November 2013</p>
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