Deborah L. McGuinness Richard Fikes James A. Hendler Lynn Andrea Stein IEEE Intelligent Systems: DAML+OIL: An Ontology Language for the Semantic Web. 2002 3 IEEE Distributed Systems Online 11 http://dsonline.computer.org/0211/f/xp5mcg.htm db/journals/dsonline/dsonline3.html#McGuinnessFHS02