1. Sutton, Richard S. & Barto, Andrew G. Reinforcement learning. First edition (MIT Press, Cambridge Massachusetts, 1998).
2. Russel, Stuart J. & Norvig, Peter . Artifical intelligence - A modern approach. Second edition (Prentice Hall, New Jersey, 2003).
3. Pfeiffer Rolf & Scheier, Christian . Understanding intelligence. First edition (MIT Press, Cambridge Massachusetts, 1999).
4. Briegel, Hans J. On machine creativity and the notion of free will. arXiv:1105.1759. (2011).
5. Nielsen, M. A. & Chuang, I. L. Quantum computation and quantum information, First edition. (Cambridge University Press, Cambridge 2000).