M. Fukumi, and S. Omatu. Proceedings of the IEEE International joint Conference on Neural
Networks 1993, IJCNN'93, 3, page 2109--2112. IEEE Computer Society, (1993)
R. Smith. (2005)cite arxiv:physics/0511215
Comment: 8 pages, 1 figure, 4 tables Accepted for publication in The Journal
of Statistical Mechanics: Theory and Experiment. Minor changes in TeX style,
added comments, table formatting corrected.