Yasuyuki Yanagida*1 and Susumu Tachi*2
*1 RCAST, The University of Tokyo
*2 Dept. of Mathematical Engineering and Information Physics, The University of TokyoProceedings of the ICAT '96 (6th International Conference on Artificial Reality and Tele-Existence), Makuhari, Chiba, Japan, pp. 65-72, November 1996.