論文

• Mika Goto, Tadaaki Tomikawa, Toshiyuki Sueyoshi. Efficiency and Mergers and Acquisitions of Electric Utility Companies, Vol. 17, 1972, Apr. 2024.
• Tadaaki Tomikawa, Mika Goto. Efficiency assessment of Japanese National Railways before and after privatization and divestiture using data envelopment analysis, Transport Policy, Vol. 118, pp. 44-55, Mar. 2022.

国際会議発表 (査読有り)

• Tadaaki Tomikawa, Mika Goto. Assessment of Japanese National Railways Privatization and Divestiture using Data Envelopment Analysis, DSI 2020 Annual Conference, Nov. 2020.

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