TY - CHAP A1 - Guizzardi, Giancarlo A1 - Wagner, Gerd A1 - Herre, Heinrich ED - Motta, Enrico T1 - On the foundations of UML as an ontology representation language T2 - Engineering knowledge in the age of the semantic web, 14th international conference, proceedings, EKAW 2004, Whittlebury Hall, UK, October 5 - 8, 2004 KW - UML KW - Ontology Representation Language Y1 - 2004 SN - 3-540-23340-7 SP - 47 EP - 62 PB - Springer CY - Berlin [u.a.] ER -