Jiawei Li Philip Hingston Graham Kendall Engineering Design of Strategies for Winning Iterated Prisoner's Dilemma Competitions. 348-360 2011 3 IEEE Trans. Comput. Intellig. and AI in Games 4 http://dx.doi.org/10.1109/TCIAIG.2011.2166268 db/journals/tciaig/tciaig3.html#LiHK11