P. Geerts;E. Laenens;D. Vermeir
UIA, Antwerp, Belgium;UIA, Antwerp, Belgium;VUB, Brussels, Belgium
A Defeasible Ontology Language
On the Move to Meaningful Internet Systems, 2002 - DOA/CoopIS/ODBASE 2002 Confederated International Conferences DOA, CoopIS and ODBASE 2002