A. Channon, and R. Damper. From Animals to Animats 5: Proceedings of the Fifth
International Conference on Simulation of Adaptive
Behavior, page 534--539. Zurich, Switzerland, MIT Press, (August 1998)
A. Channon, and R. Damper. Proceedings of the 6th International Conference on
Artificial Life (ALIFE-98), page 384--388. Cambridge, MA, USA, MIT Press, (June 1998)