Specification of an Ontology for Route Graphs. - Bernd Krieg-Brückner; Udo Frese; Klaus Lüttich; Christian Mandel; Till Mossakowski; Robert J. Ross (Spatial Cognition, 2004)

Ontologies for the Semantic Web in Casl. - Klaus Lüttich; Till Mossakowski; Bernd Krieg-Brückner (WADT, 2004)

Approximation of Ontologies in CASL. - Klaus Lüttich (FOIS, 2006)

Development of Modular Ontologies in CASL. - Klaus Lüttich; Claudio Masolo; Stefano Borgo (WoMO, 2006)

Reasoning Support for Caslwith Automated Theorem Proving Systems. - Klaus Lüttich; Till Mossakowski (WADT, 2006)

An Analysis of the Navigation Metaphor - And Why It Works for the World Wide Web. - Hartwig H. Hochmair; Klaus Lüttich (Spatial Cogn. Comput., 2006)

The Heterogeneous Tool Set, Hets. - Till Mossakowski; Christian Maeder; Klaus Lüttich (TACAS, 2007)

Ontological Modularity and Spatial Diversity. - John A. Bateman; Stefano Borgo; Klaus Lüttich; Claudio Masolo; Till Mossakowski (Spatial Cogn. Comput., 2007)

Development of structured ontologies in CASL. - Klaus Lüttich (2007)