Type of Journal Identifier


Names the type of identifier or the authority that created this particular journal identifier, because there may be several “unique identifiers” provided for an article.


For example, the value “doi” would indicate that the identifier is a DOI (Digital Object Identifier) and say nothing about the authority who assigned it. The value “publisher-id” would indicate that the publisher of the article assigned this particular identifier and say nothing about what kind of identifier it is. Similarly, the value “pmc” would indicate that PubMed Central had provided this journal identifier.


Although designed to accept any text as its value, the following are suggested journal identifier types for this attribute:


Identifier assigned by an archive or other repository.


Identifier assigned by a data aggregator.


Digital Object Identifier for the entire journal, not just for the article (rare).


Identifier assigned by an abstracting or indexing service.


Identifier assigned by PubMed Central, for example, the PMC journal abbreviation such as “pnas”, “mbc”, “nar”, “molcellb”, which may be the same as the abbreviated journal.


Identifier assigned by the content publisher, for example, “MOLEC”, “MOLCEL”.


Identifier assigned by the PubMed/MEDLINE and is typically the journal abbreviation, for example, “Mol Biol Cell”, “Nucleic Acids Res”, which may be the same as the abbreviated journal title.

Attribute Values

In Element

<journal-id> Journal Identifier
Value Meaning
Data characters Text, numbers, or special characters, that identify the organization or service who assigned the identifier (for example, “index” to indicate an abstracting or indexing service) or the type of identifier (for example, “doi”).
Restriction: This attribute may be specified if the element is used.