I. Jahnke, C. Ritterskamp, and T. Herrmann. AAAi Fall Symposium, American Association for Artificial Intelligence, 8 Symposium: Roles, an interdisciplinary perspective, London, AAAI Press, (2005)
I. Jahnke. Proceedings of I-Know 2005. 5th International Conference on Knowledge Management. Graz, Austria, 29.6.-1.7.2005. Journal of Universal Computer Science., page 624-632. (2005)