The explicit list of values for the pub-id-type attribute, which names the type of identifier, or the organization or system that defined the identifier, for a specific ID of a journal article or other work
The pub-id-type attribute names the type of identifier, or the organization or system that defined the identifier, for the identifier of the journal article or a cited publication. This attribute is used on the <article-id> element, which holds an identifier for the entire article. Among other elements using this attribute is the <pub-id> element, which is an identifier for a publication cited in a bibliographic reference (<citation> or <nlm-citation>).
<!ENTITY % pub-id-types "art-access-id | coden | doaj | doi | manuscript | medline | other | pii | pmcid | pmid | publisher-id | sici" >