Valentina Presutti Enrico Daga Aldo Gangemi Alberto Salvati http: //ontologydesignpatterns.org [ODP]. 2008 International Semantic Web Conference (Posters & Demos) http://ceur-ws.org/Vol-401/iswc2008pd_submission_84.pdf conf/semweb/2008p db/conf/semweb/iswc2008p.html#PresuttiDGS08