Proceedings of TOOLS USA 97. International Conference on Technology of Object Oriented Systems and Languages Technology of object-oriented languages and systems Technology of Object-Oriented Languages and Systems, 1997. TOOLS 23. Proceedings. :377-405 1997
Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems. IROS '96 Intelligent robots and systems Intelligent Robots and Systems '96, IROS 96, Proceedings of the 1996 IEEE/RSJ International Conference on. 3:1707-1714 vol.3 1996
Proceedings of 1993 IEEE/Tsukuba International Workshop on Advanced Robotics Advanced robotics Advanced Robotics, 1993. Can Robots Contribute to Preventing Environmental Deterioration? Proceedings, 1993 IEEE/Tsukuba International Workshop on. :29-35 1993