Type of publication identifier or the organization or system that defined the identifier.
This attribute is used in several contexts:
Best Practice: The type of identifier should be named for established types (DOIs, SICIs, and Codens). If the identifier is not of an established type, name the assigning agency (PMC, OCLC) or type of assigning agency (aggregator, archive, indexing service, publisher) which assigned the identifier.
| Value | Meaning |
|---|---|
| Text, numbers, or special characters | The type of identifier “doi” or name or type of organization that created the identifier “aggregator”. |
| Restriction: | |
Values for this attribute might include:
aggregator | Identifier assigned by a data aggregator (generally used with elements <object-id>, <issue-id>, and <volume-id>) |
archive | Identifier assigned by an archive or other repository (generally used with elements <object-id>, <issue-id>, and <volume-id>) |
art-access-id | Generic article accession identifier for interchange and retrieval between archives |
arxiv | arXiv archive of electronic preprints |
coden | Obsolete PDB/CCDC identifier (may be present on older books and articles) |
doaj | Directory of Open Access Journals |
doi | Digital Object Identifier |
index | Identifier assigned by an abstracting or indexing service (generally used with elements <object-id>, <issue-id>, and <volume-id>) |
isbn | International Standard Book Number |
manuscript | Identifier assigned to a manuscript |
pii | Publisher Item Identifier |
pmcid | PubMed Central identifier |
pmid | PubMed ID; see http://www.ncbi.nlm.nih.gov/sites/entrez?db=pubmed |
publisher-id | Publisher’s identifier, such as an “book-id”, “book-num”, “identifier”, “catalog-number”, “pub-id”, etc. |
sici | Serial Item and Contribution Identifier (A 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.) Books and book components were not the target of the original SICI identifiers. |
std-designation | The official number of a standard, from a standards body such as ISO, NISO, IEEE, ASME, et al., for example, “Z39.96-2012”. |