Mitsuhiro Hayashibe, Naoki Suzuki, Makoto Hashizume, Asaki Hattori, Shigeyuki Suzuki, Yoshihiro Kakeji, Kozo Konishi. An interactive planning system for optimal trocar site placement of surgical robot da Vinci. In Heinz U. Lemke, Kiyonari Inamura, Kunio Doi, Michael W. Vannier, Allan G. Farman, Johan H. C. Reiber, editors, CARS 2004. Computer Assisted Radiology and Surgery. Proceedings of the 18th International Congress and Exhibition, Chicago, USA, June 23-26, 2004. Volume 1268 of International Congress Series, pages 1336, Elsevier, 2004.