1. Reinforcement Learning, An Introduction;Sutton,1998
2. W. Smart, L. Kaelbling, Practical reinforcement learning in continuous spaces, in: International Conference on Machine Learning, ICML, 2000.
3. N. Hernandez, S. Mahadevan, Hierarchical memory-based reinforcement learning, in: Advances in Neural Information Processing Systems, NIPS, Denver, USA, 2000.
4. M. Carreras, P. Ridao, A. El-Fakdi, Semi-online neural-Q-learning for real-time robot learning, in: IEEE/RSJ International Conference on Intelligent Robots and Systems, IROS, Las Vegas, USA, 2003.
5. K. Murphy, A survey of POMDP solution techniques, 2000.