1. S. Penny, “Embodied Cultural Agents: at the intersection ofArt, Robotics and Cognitive Science”, AAAI Socially Intelligent Agents Symposium, MIT, November 8-10, 1997
2. V. Braitenberg, Vehicles: Experiments in Synthetic Psychology. Cambridge, MIT Press, 1984
3. S. Penny, “Why do we want our machines to seem alive?”, Scientific American, 150th anniversary issue, September 1995