Irene Celino Ana Karla Alves de Medeiros Gernot Zeissler Michael Oppitz Federico Michele Facca Stefan Zoeller Semantic Business Process Analysis. 2007 SBPM http://ceur-ws.org/Vol-251/paper6.pdf conf/esws/2007sbpm db/conf/esws/sbpm2007.html#CelinoMZOFZ07