Blue electroluminescent devices with SrGa2S4: Ce for full-color display. - Yoji Inoue; Kikuo Kobayashi; Katsu Tanaka; Shinji Okamoto; Yuzuru Tsuchiya; Kuniharu Takizawa (IEEE Trans. Broadcast., 1996)

Constructing Continuous-Time Chaos-Generating Templates Using Polynomial Approximation. - Hidetaka Ito; Shinji Okamoto; Kosuke Fujimoto; Akira Kumamoto (ECMS, 2010)