http://www.ilrt.bris.ac.uk/discovery/rdf/resources/
Dave Beckett
Resource Description Framework (RDF) Resource Guide
http://www.oasis-open.org/cover/rdf.html
Oasis
Resource Description Framework (RDF)
http://www.yy.cs.keio.ac.jp/~suzuki/project/uxf/
Pattern Markup Language
UML eXchange Format (UXF) is a XML based model interchange format for UML.
http://www.xml.org
XML.ORG
Portal de la industria XML