Analysis of propensity to patent and science-dependence of large Japanese manufacturers of electrical machinery. - Jun Suzuki 007; Kiminori Gemba; Schumpeter Tamada; Yoshihito Yasaki; Akira Goto (Scientometrics, 2006)

Significant difference of dependence upon scientific knowledge among different technologies. - Schumpeter Tamada; Yusuke Naito 002; Fumio Kodama; Kiminori Gemba; Jun Suzuki 007 (Scientometrics, 2006)

Analysis of cooperative research and development networks on Japanese patents. - Hiroyasu Inoue; Wataru Souma; Schumpeter Tamada (J. Informetrics, 2010)