1. Boyan, J.A., Moore, A.W.: Generalization in reinforcement learning: Safely approximating the value function. In: Tesauro, G., Touretzky, D.S., Leen, T.K. (eds.) Advances in Neural Information Processing Systems 7, pp. 369–376. The MIT Press, Cambridge (1995)
2. Butz, M.: Kernel-based, ellipsoidal conditions in the real-valued XCS classifier system. In: Proceedings of the 2005 conference on Genetic and evolutionary computation, pp. 1835–1842 (2005)
3. Butz, M., Stolzmann, W.: Advances in learning classifier systems. An Algorithmic Description of ACS2, pp. 211–229. Springer, Berlin (2002)
4. Butz, M.V., Goldberg, D.E.: Generalized state values in an anticipatory learning classifier system. In: Butz, Martin V., Sigaud, Olivier, Gérard, Pierre (eds.) Anticipatory Behavior in Adaptive Learning Systems. Lecture Notes in Computer Science (Lecture Notes in Artificial Intelligence), vol. 2684, pp. 282–301. Springer, Heidelberg (2003)
5. Butz, M.V., Goldberg, D.E., Stolzmann, W.: Introducing a genetic generalization pressure to the Anticipatory Classifier Systems part I: theoretical approach. In: Proceedings of the 2000 Genetic and Evolutionary Computation Conference (GECCO 2000), 34–41 (2000)