Franz Baader Carsten Lutz Holger Sturm Frank Wolter Fusions of Description Logics. 21-30 2000 conf/dlog/2000 Description Logics http://SunSITE.Informatik.RWTH-Aachen.DE/Publications/CEUR-WS/Vol-33/Baader21-30.ps db/conf/dlog/dlog2000.html#BaaderLSW00