%0 Conference Paper %1 DBLP:conf/esws/BrockmansHHS06 %A Brockmans, Saartje %A Haase, Peter %A Hitzler, Pascal %A Studer, Rudi %B ESWC %D 2006 %K 2006 proceedings web and reason eswc rules conference european semantic %P 303-316 %T A Metamodel and UML Profile for Rule-Extended OWL DL Ontologies.