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<article-id> Article Identifier

Unique external identifier assigned to an article.

Usage/Remarks

Multiple Identifiers

There may be many identifiers for a single article, and each <article-id> holds only one. While such an identifier may be a unique identifier in some system, an article can be identified in many systems. The content for this element may be assigned by a publisher, a jobber, Crossref, or PubMed Central, for example. Examples of such identifiers include the publisher’s tracking number, a DOI, a PNAS number, etc.

Attribute Best Practice

Type of Identifier Best Practice

Best practice is to use the @pub-id-type attribute to indicate the type of the external identifier, such as a publisher’s identifier, a DOI, a PMID, an aggregator’s or archive’s identifier, the identifier assigned by an indexing or hosting service, or similar. (See @pub-id-type for values.)

Authority for Identifier Best Practice

The attribute @assigning-authority should name the organization or system that assigned the identifier or administers the identifier (such as Crossref, OCLC, GenBank, Figshare).
External Identifier
The <article-id> element holds an external identifier, typically assigned to a document by an agency such as the publisher, an archive, an aggregator or hosting service, or Crossref or other DOI authority. The contents of this element should not be confused with the @id attribute, which holds an internal document identifier that can be used by software to perform a simple link inside the document.
Conversion Note
An archive may attempt to carry all the identifiers associated with an article. For example, during conversion PubMed Central will create <article-id>s for identifiers that come from the publisher as elements or as attributes on the original article.
Historical Note
Until JATS version 1.2d2 (2018), the @contrib-id-type’s value conflated two meanings: the attribute could hold the type of identifier (such as an ORCID or a arXiv Identifier), or it could hold the name of the organization or system that defined or registered the identifier (such as ORCID or Elsevier). There was no way to state both that the identifier content of the element was a Scopus Identifier and that the administrator was Elsevier. Although all the previous @contrib-id-type values will continue to be accepted, for best practice, the @assigning-authority should name an organization, and the @pub-id-type attribute should describe the identifier type.
Attributes
assigning-authority
custom-type
pub-id-type
specific-use

Base Attributes

id
xml:base
Models and Context
May be contained in
<article-meta>, <event>, <event-desc>, <front-stub>
Description
Text, numbers, or special characters
Content Model
<!ELEMENT  article-id   (#PCDATA)                                    >
Tagged Samples
Multiple IDs, differentiated by @pub-id-type 
<article dtd-version="1.4d1">
 <front>
  <journal-meta>...</journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">1037</article-id>
   <article-id pub-id-type="doi">10.1128/JCM.39.7.2634-2636.2001</article-id>
   <article-id pub-id-type="pmid">11427581</article-id>
   <article-categories>...</article-categories>
   <title-group>
    <article-title>Molecular Identification of a <italic>Dietzia
     maris</italic> Hip Prosthesis Infection Isolate</article-title>
   </title-group>
   ...
  </article-meta>
 </front>
 ...
</article>
Mathematical Reviews (MR) article identifier 
...
<article-meta>
 <article-id assigning-authority="mr"
   pub-id-type="publisher-id">1707243</article-id>
 ...
</article-meta>
...
Zentralblatt MATH (zbMATH) article identifier 
...
<article-meta>
 <article-id pub-id-type="zbl">06451297</article-id>
 ...
</article-meta>
...