Metadata Object Description Schema

Comparison of reference management software for software supporting the MODS format

Metadata Authority Description Schema (MADS) created to serve as a companion to the Metadata Object Description Schema (MODS). MADS describes authorities (as in authority control), meaning people, organizations, geographical location etc. involved in creating, publishing, or contributing to creative works and publications. MODS describes individual items.

Metadata standards

https://en.wikipedia.org/wiki/Metadata_Object_Description_Schema