Toshitsugu Sawai

DEADLOCK-FREE CONDITIONS FOR A CLASS OF PETRI-NETS(Mathematical Theory of Control and Systems)

Sadatoshi Kumagai, Takashi Naito, Shinzo Kodama, 1984 .

High Precision Automatic Alignment and its Computer Vision Technology

Toshitsugu Sawai, Tohru Tanigawa, Tadashi Nakao, 1989, J. Robotics Mechatronics.