http://www.rfc-editor.org/rfc/rfc5791.txt
RFC 5791: RFC 2731 ("Encoding Dublin Core Metadata in HTML") Is Obsolete, J. Reschke, J. Kunze2010-02-01T23:00:00-00:00This document obsoletes RFC 2731, "Encoding Dublin Core Metadata in HTML", as further development of this specification has moved to the Dublin Core Metadata Initiative (DCMI). This document is not an Internet Standards Track specification; it is published for informational purposes.