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First Author:
Nobuyuki Ito
Division of Natural Resource Economics, Graduate School of Agriculture, Kyoto Univerisy
Oiwake-cho, Kitashirakawa, Sakyo-ku
Kyoto, 606-8502, Japan

Second Author:

Kenji Takeuchi
Graduate School of Economics, Kobe University

Third Author:

Takahiro Tsuge
Faculty of Economics, Konan University

Fourth Author:

Atsuo Kishimoto
National Institute of Advanced Industrial Science and Technology