[1] Brooks, R. and L. Stein (1994) Building Brains for Bodies. Autonomous Robots (1) 7-25.

[2] Edelman, G.M. (1987) Neural Darwinism: The Theory of Neuronal Group Selection. New York: Basic Books.

[3] Husbands, P, I. Harvey, D. Cliff (1995) Circle in the Round: State Space attractors for Evolved Sighted robots. In: Steels, L. (ed.) (1995) The Biology and Technology of Intelligent Autonomas Agents. Nato ASI Series, vol 144. Springer Verlag, Berlin. pp. 222-257.

[4] McFarland, D. (1994) In: Proceedings of the third Simulation of Adaptive Behavior Conference. The MIT Press, Cambridge Ma.

[5] MacLennan, B. (1991) Synthetic Ethology: An Approach to the Study of Communication. In: Langton, C., et.al. (ed.) Artificial Life II. Addison-Wesley Pub. Co. Redwood City, Ca. p. 631-658.

[6] Pfeifer, R. (1996) Building Fungus Eaters: Design Principles of Autonomous Agents. In: Proceedings of Fourth International Conference on Simulation of Adaptive Behavior. The MIT Press, Cambridge Ma.

[7] Steels, L. (1994) The Artificial Life Roots of Artificial Intelligence. Artificial Life Journal 1(1), pp. 89-125.

[8] Steels, L. (1994) A case study in the behavior-oriented design of autonomous agents. In: Proceedings of the third Simulation of Adaptive Behavior Conference. The MIT Press, Cambridge Ma.

[9] Steels, L. (1996a) Emergent Adaptive Lexicons. In: Maes, P. (ed.) (1996) From Animals to Animats 4: Proceedings of the Fourth International Conference On Simulation of Adaptive Behavior, The MIT Press, Cambridge Ma.

[10] Steels, L. (1996b) Perceptually grounded meaning creation. In: Tokoro, M. (ed.) (1996) Proceedings of the International Conference on Multi-Agent Systems. AAAI Press, Menlo Park Ca. p. 338-344.

[11] Steels, L. (1996c) A self-organizing spatial vocabulary. Artificial Life Journal, 3(2).

[12] Steels, L. (1997) Constructing and Sharing Perceptual Distinctions. In: van Someren, M. and G. Widmer (eds.) (1997) Proceedings of the European Conference on Machine Learning. Springer-Verlag, Berlin.

[13] Steels, L. (1997) The origins of syntax in visually grounded robotic agents. In: Polack, M. (ed.) Proceedings of IJCAI 97. AAAI Press, Menlo Park Ca.

[14] Steels, L. and R. Brooks (eds.) (1995) Building Situated Embodied Agents. The Alife route to AI. Lawrence Erlbaum Ass. New Haven.

[15] Werner, G. and M. Dyer (1991) Evolution of Communication in Artificial Organisms. In: Langton, C., et.al. (ed.) Artificial Life II. Addison-Wesley Pub. Co. Redwood City, Ca. p. 659-687.

[16] Vereertbrugghen, D. (1996) Design and Implementation of a Second Generation Sensor-Motor Control Unit for Mobile Robots. Licenciaatsverhandeling VUB Dept of Computer Science. 1996.

[17] Wittgenstein, L. (1974) Philosophical Investigations. Translated by G. Anscombe. Basil Blackwell, Oxford.

[18] Yanco, H. and L. Stein (1993) An Adaptive Communication Protocol for Cooperating Mobile Robots. In: Meyer, J-A, H.L. Roitblat, and S. Wilson (1993) From Animals to Animats 2. Proceedings of the Second International Conference on Simulation of Adaptive Behavior. The MIT Press, Cambridge Ma. p. 478-485