Yuta Kikuchi, Taro Akiyama, Tatsumi Ishizuka, Ryuichi Tamura. The Influence of Public R&D Investments on Private Sector Patenting in Fuel Cells. Graduate School of Economics and Business Administration, Hokkaido University Discussion paper series A. 2018
溝部 陽司, 石塚 辰美. 深セン進出日系企業の事業展開と分業体制変化の考察. CEGS DISCUSSION PAPER SERIES No. 2011-CEGS-04. 2011