The technological problem in telephone business in prewar Japan: R & D for automatic telephone switchboard. Entrepreneurial studies. 2007. 4. 1-19
Nakajima Yuki. Product Development Strategy of Drawings-Approved Parts Suppliers : The Influence of Transition from Marketed-goods-type Parts Trade. Journal of economics and business administration. 2005. 191. 2. 85-99
Evolution of “Design Approved Parts” Suppliers in the Japanese Electronics Industry The Case of Teikoku Tsushin Kogyo in the 1960s
(European Business History Association 2012)
The role of SMEs in the development of Japanese consumer electronics industry after WWII”
(European Business History Association 2011)
The spread of wartime technology through PB reports after WW2: the aquisition process of chemical technology in postwar Japan
(World Economic History Congress 2009)