Names the type of publication identifier, or the organization or system that defined the identifier.
This attribute is used in two contexts:
| Value | Meaning |
|---|---|
| art-access-id | Generic article accession identifier for interchange and retrieval between archives |
| coden | Obsolete PDB/CCDC identifier (may be present on older articles) |
| doaj | Directory of Open Access Journals |
| doi | Digital Object Identifier |
| isbn | International Standard Book Number |
| manuscript | Identifier assigned to a manuscript |
| other | None of the named identifiers |
| pii | Publisher Item Identifier; see http://web.archive.org/web/20031013073003/http://www.elsevier.nl/inca/homepage/about/pii/ |
| 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 “article-id”, “artnum”, “identifier”, “article-number”, “pub-id”, etc. |
| sici | 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.) |
| Restriction: This attribute may be specified if the element is used. | |
| Value | Meaning |
|---|---|
| Text, numbers, or special characters | The type of identifier “ doi ”or name or type of organization that created the identifier “ pmcid ” (PubMed Central identifier) |
| Restriction: This attribute may be specified if the element is used. | |
Values for this attribute might include:
|
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 |
|
aggregator |
Identifier assigned by a data aggregator (generally used with elements <object-id>, <issue-id>, and <volume-id>) |
|
coden |
Obsolete PDB/CCDC identifier (may be present on older 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; see http://web.archive.org/web/20031013073003/http://www.elsevier.nl/inca/homepage/about/pii/ |
|
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 “article-id”, “artnum”, “identifier”, “article-number”, “pub-id”, etc. |
|
sici |
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.) |