From Animals to Animats 9 9th International Conference on Simulation of Adaptive Behavior, SAB 2006, Rome, Italy, September 25-29, 2006. Proceedings - Nolfi, Stefano; Baldassarre, Gianluca; Calabretta, Raffaele; Hallam, John C. T.; Marocco, Davide; Meyer, Jean-Arcady; Miglino, Orazio; Parisi, Domenico (Springer Berlin Heidelberg, 2006)