Identifier of the authority that defined the abbreviation (for example, “ nlm-ta ” for an NLM title abbreviation, “ publisher ” for a publisher-specific abbreviation).
| Value | Meaning |
|---|---|
| Text, numbers, or special characters | A name, acronym, or descriptive word naming the authority responsible for the abbreviation, for example, “ publisher ”, meaning that the publisher of the article assigned the abbreviation |
| Restriction: This attribute may be specified if the element is used. | |