RuleML: Data Model, Language Hierarchy, and Transformations Harold Boley, DFKI GmbH, Visiting Researcher at NRC IIT e-Business, Fredericton 2001 Seminar.
1 Ontology as a logic of intensions Marie Duží, Martina Číhalová, Marek Menšík VSB–Technical University Ostrava, Department of Computer Science FEI, Silesian.
