pub-id-type Type of Publication Identifier

Type of publication identifier or the organization or system that defined the identifier.


Attribute Best Practice

Type of Identifier

While the values of the @pub-id-type attribute are unconstrained, Best Practice is to reserve the @pub-id-type value for the specific type of the external identifier (such as a DOI or PMID) or for a generic type of identifier (such as a publisher’s identifier, an aggregator’s or archive’s identifier, the identifier assigned by an indexing or hosting service, or similar). The values for @pub-id-type are unconstrained and may take any value.

Authority for Identifier

The attribute @assigning-authority should name the organization or system that assigned the identifier or administers the identifier (such as Crossref, OCLC, GenBank, Figshare).
The @pub-id-type attribute can be used:
  • on an object identifier element (<object-id>), which may be used inside a citation or on a some block-level objects such as a <fig> or structural objects such as a <sec>;
  • inside a bibliographic citation element such as <mixed-citation> or <element-citation> (for example, on the <pub-id> element, which identifies a publication cited in a bibliographic reference list);
  • on an issue or volume identifier (for example, on the <issue-id> element, which identifies an issue cited in a bibliographic reference list).
Case in Attribute Values
Upper/lower/mixed case in attribute values for organizations and identifier types is likely to be variable and thus unreliable for search/discovery. If possible, JATS recommends a case-insensitive search for such values. For example, if an identifier type is a DOI, many publishers will use “doi” (to keep all attribute values lower case), while others will use “DOI” (because that is the native language acronym). Adding to this variability are identifiers that change over time. Expect to find the organization Crossref in values as “Crossref” (the currently preferred organization name), “CrossRef” (the previously preferred organization name), or “crossref” (for publishers who prefer all lower case for attributes).
Historical Note
BITS takes the usage of this attribute from JATS, the major difference being that JATS can use this attribute in the metadata for an article, whereas BITS does not use this attribute in the metadata for a book. In BITS 2.0 and JATS version 1.2d2 (2018), the @pub-id-type’s value conflated two meanings: the attribute could hold the type of identifier (such as a DOI or ISBN), or it could hold the name of the organization or system that defined or registered the identifier (such as Crossref). There was no way to state both that the identifier content of the element was a DOI and that the server was Figshare or Crossref. Although all the previous @pub-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.
OPTIONAL on many elements; click for list and usage
Value Meaning
Text, numbers, or special characters The type of identifier, either as a specific type (such as “doi” or “std-designation”) or a generic identifier type (such as “publisher-id” or “archive”).
Restriction @pub-id-type is an optional attribute; there is no default.

Suggested usage

Best Practice: While this attribute may contain any text, the type of identifier should be named when the identifier is a known type, for example, DOI, ISBN, or Handle. The list below suggests some well-established types:
Identifier assigned by a data aggregator (generally used with elements <object-id>, <issue-id>, and <volume-id>)
Identifier assigned by an archive or other repository (generally used with elements <object-id>, <issue-id>, and <volume-id>)
Generic article accession identifier for interchange and retrieval between archives
arXiv archive of electronic preprints
Obsolete PDB/CCDC identifier (may be present on older articles)
The value “custom” is used in versions of JATS that have a static list of values for the @pub-id-type attribute. To add a value to such a list, the identifier is given the type “custom” and a separate @custom-type attribute provides the typing value. There is no need for this mechanism in BITS, since there are no restrictions on the value of @pub-id-type, but “custom” and @custom-type have both been included in BITS so that documents valid to a stricter version of the JATS Tag Set can still be made into book parts.
Directory of Open Access Journals
Digital Object Identifier
Identifier assigned by an abstracting or indexing service (generally used with elements <object-id>, <issue-id>, and <volume-id>)
International Standard Book Number
Identifier assigned to a manuscript
NLM Medline identifier
PubMed Central identifier
Publisher’s identifier, such as an “book-id”, “booknum”, “identifier”, “book-number”, “pub-id”, etc.
Serial Item and Contribution Identifier (An ANSI/NISO Z39.56 code to uniquely identify volumes, articles, or other parts of a periodical. A journal article may have more than one SICI, for example, one for a print version and another for an electronic version.)
The official number of a standard, from a standards body such as ISO, NISO, IEEE, ASME, etc., for example, “Z39.96-2015
Tagged Sample

<pub-id> is a DOI (inside citation)

<element-citation publication-type="journal" publication-format="print">
 <pub-id pub-id-type="doi">10.1542/peds.2004-1441</pub-id>