SemanticMiner - Ontology-Based Knowledge Retrieval. - Eddie Mönch; Mike Ullrich; Hans-Peter Schnurr; Jürgen Angele (J. Univers. Comput. Sci., 2003)

How Ontologies and Rules Help to Advance Automobile Development. - Thomas Syldatke; Willy Chen; Jürgen Angele; Andreas Nierlich; Mike Ullrich (RuleML, 2007)