ICOT Research Center, Institute for New Generation Computer Technology, Mita-Kokusai Bldg. 21F, 1-4-28, Mita, Minato-ku, 108, Tokyo, Japan
Koichi Furukawa
Department of Information Systems, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga-Koen 6-1, Kasuga-shi, 816, Fukuoka, Japan
Makoto Amamiya
Department of Applied Mathematics, The Weizmann Institute of Science, 76100, Rehovot, Israel
Ehud Shapiro
Department of Computer Science, University of Bristol, Queen’s Building, University Walk, BS81TR, Bristol, U.K.
David H. D. Warren