1. Aibo, URL: http://www.aibo.com Last referenced 23rd March 2001.
2. Arkin, R. (1998) Behavior-based robotics. MIT Press, Cambridge, Mass.
3. AURORA, URL: http://www.aurora-project.com/ Last referenced 23rd March 2001.
4. Billard, A. (2000) Play, dreams and imitation in Robota. Proc. Socially Intelligent Agents-the Human in the Loop, AAAI Fall Symposium, Technical Report FS-00-04, AAAI Press, pp. 9–12.
5. MSc Thesis;K.H. Blocher,1999