The Impact of the University on the Local Economy -Using the 2000 Input-Output Table of Yokohama City-. Business Jounal of PAPAIOS. 2006. 14. 1. 56-67
Economic Integration in East Asia: A view from Interdependency in Intermidiate Input Goods. Center for International Trade Studies, Faculty of Economics, Yokohama National University. 2005. 12. 1-25
Trade and Interdependent relationship in East Asian Economy. 2004