Sean Bechhofer Ian Horrocks Carole A. Goble Robert Stevens OilEd: a Reason-able Ontology Editor for the Semantic Web. 2001 conf/dlog/2001 Description Logics http://CEUR-WS.org/Vol-49/BechhoferHorrocksGobleStevens-1start.ps db/conf/dlog/dlog2001.html#BechhoferHGS01