Ontology-Based Search for Interactive Digital Maps. - Sebastian Hübner; Rainer Spittel; Ubbo Visser; Thomas J. Vögele (IEEE Intell. Syst., 2004)

An Agent Architecture for Ensuring Quality of Service by Dynamic Capability Certification. - Thorsten Scholz; Ingo J. Timm; Rainer Spittel (EUMAS, 2005)