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[文献書誌] Piyush, Tiwari, Masayuki Doi, Hidekazu Itoh: "A CGE Analysis of the Potential Impact of Information Technology on the Japanese Economy"The Journal of Policy Reform. Vol.6,No.1. 17-33 (2003)
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[文献書誌] Kawakami, Tetsu, Piyush Tiwari, Masayuki Doi: "Assessing Impact of ITS on Japanese Economy Using a Computable Equilibrium Model"Economics Impacts of ITS : Innovations and Case Studies, Elsevier Science Publishers. (印刷中). (2004)
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[文献書誌] Kawakami, Tetsu, Masaynki Doi: "Port Capital Formation and Economic Development in Japan : A Vector Autoregression Approach"Papers in Regional Science. (印刷中). (2004)
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[文献書誌] 土井正幸(編著): "港湾と地域の経済学"多賀出版. 429 (2003)