CIDOC Conceptual Reference Model SPAR DataCite Ontology Source
http://www.cidoc-crm.org/cidoc-crm/E42_Identifier http://purl.org/spar/datacite/Identifier LOOM
http://www.cidoc-crm.org/cidoc-crm/E70_Thing http://www.w3.org/2002/07/owl#Thing LOOM