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)
G. Ianni, T. Krennwallner, A. Martello, and A. Polleres. The Semantic Web -- ISWC 2009: 8th International Semantic Web Conference, Chantilly, VA, USA, volume 5823 of Lecture Notes in Computer Science, Springer, Berlin, (2009)