Control system for the Khepera robot by a neural network with competition and cooperation. - Kei Sugihara; Masayoshi Tabuse; Tatsuro Shinchi; Tetsuro Kitazoe (Artif. Life Robotics, 2001)

Continuously Variable Transmission by High-speed Path Switching of Linear Electro-hydrostatic Actuator. - Kei Sugihara; Takahiro Nozaki; Toshiyuki Murakami (IECON, 2019)

Experimental Verification of a Novel Continuously Variable Transmission with Electro-Hydrostatic Actuator. - Hiroshi Asai; Kei Sugihara; Tomoya Kitamura; Yuki Saito 003; Kouhei Ohnishi; Takahiro Nozaki (AMC, 2021)