L. Roalter, A. Möller, S. Diewald, and M. Kranz. Proceedings of the 7th International Conference on Intelligent Environments (IE), page 214--221. (July 2011)
L. Roalter, A. Möller, S. Diewald, and M. Kranz. Proceedings of the 7th International Conference on Intelligent Environments (IE), page 214--221. (July 2011)