D. Cho, and B. Zhang. Proceedings 4th International Symposium on Artificial
Life and Robotics, page 236--239. B-Con Plaza, Beppu, Oita, Japan, (19-22 January 1999)
K. Kim, S. Lim, and S. Cho. Intelligent Data Engineering and Automated Learning -
IDEAL 2004, 5th International Conference, Proceedings, volume 3177 of Lecture Notes in Computer Science, page 813--819. Exeter, UK, Springer, (August 2004)
S. Cho, and K. Shimohara. Proceedings of the 1996 IEEE International
Conference on Evolutionary Computation, 1, page 681--684. Nagoya, Japan, (20-22 May 1996)
B. Zhang, and D. Cho. Genetic Programming 1998: Proceedings of the Third
Annual Conference, page 431--439. University of Wisconsin, Madison, Wisconsin, USA, Morgan Kaufmann, (22-25 July 1998)
J. Hong, and S. Cho. Proceedings of The First Asian-Pacific Workshop on
Genetic Programming, page 53--61. Rydges (lakeside) Hotel, Canberra, Australia, (8 December 2003)