1. The CIDOC Conceptual Reference Model, Applications,
http://cidoc.ics.forth.gr/uses_applications.html
.
2. The CIDOC Conceptual Reference Model, References,
http://cidoc.ics.forth.gr/references.html
.
3. Conservation OnLine, Resources for Conservation Professionals
http://palimpsest.stanford.edu/
.
4. HEREIN Thesaurus: European Heritage Network,
http://www.european-heritage.net/sdx/herein/thesaurus/introduction.xsp
.
5. Simple Knowledge Organisation Systems (SKOS) - home page,
http://www.w3.org/2004/02/skos
.