D. Sonntag, P. Wennerberg, P. Buitelaar, and S. Zillner. Cases on Semantic Interoperability for Information Systems Integration: Practices and Applications, chapter 8, IGI Global, Hershey, PA, (2009)
M. Tran, B. Hirsbrunner, and M. Courant. MPAC '05: Proceedings of the 3rd International Workshop on Middleware for Pervasive and Ad-hoc Computing, Grenoble, France, page 1-8. New York, NY, USA, ACM, (2005)
R. Vilimek, T. Hempel, and B. Otto. Human-Computer Interaction: HCI Intelligent Multimodal Interaction Environments, 12th International Conference, HCI International 2007, Beijing, China, Proceedings, Part III, volume 4552 of Lecture Notes in Computer Science, Springer, Berlin, (2007)
W. Wahlster. KI 2003: Advances in Artificial Intelligence, 26th Annual German Conference on AI, KI 2003, Hamburg, Germany, volume 2821 of Lecture Notes in Artificial Intelligence, Springer, Berlin, (2003)