1. “RoboCup official site”, http://www.robocup.org , visited: May 10, 2002
2. H. Matsubara, I. Noda and K. Hiraki, “Learning of Cooperative Actions in Multi-Agent Systems: A Case Study of Pass Play in Soccer”, papers from the 1996 AAAI spring symposium, Menlo Park, CA, 1996
3. “Soccer Server Manual”, http://sourceforge.net/projects/sserver/ , visited: May 10, 2002
4. J. Habibi et al, “Sharif-Arvand Simulation Team”, In P. Stone, T. Balch and G. Kraetzschmar, editors, RoboCup 2000: Robot Soccer WorldCup IV, pp. 433–436, Springer, 2001
5. L. Paulo and N. Lau, “COACH UNILANG-A Standard Language for Coaching a (Robo)Soccer Team”, In Proceedings of the Fifth International Workshop on RoboCup, Seattle, USA, 2001