3Arndt Sven W, Preference Areas and Intra-Product Specialization, Globalization and Political Economy of Trade Policy (APF Press 2001) , 237-249.
4Krugman, P., (1991) "Increasing Return and Economic Geography," Journal of Poh'tical Economy 3, 483-499.
5Krugman, Paul R., (1979) "Increasing Returns, Monopolistic Competition, and International Trade," Journal of Internation- al Economics 9, 469-479.
6Lancaster, Kelvin, (1980) "Intra-industry Trade Under Perfect Monopolistic Competition," Journal of International Economics 10, 151-175.
7Vernon, (1966) "International Raymond, Investment and International in Trade the Product Cycle," Quarterly Journal of Economics May 80.2, 190-207.
8Mundell, R. A. (1957) "International Trade and Factor Mobility," American Economic Review 47, 321-335.
9Yang,X., and Zhang, D., (2000) "Endogenous Structure of Division of Labor, Endogenous Trade Policy Regime, and a Dual Structure in Economic Development," Annals of Economics and Finance 1, 203-215.
10Xiaokai Yang and Kar-yiu Wong, (1998) "An Extended Ethier Model based on the Tradeoff between Economies of Scale and Transaction Costs," in Kenneth J. Arrow, et al, eds., Increasing Returns and Economic Analysis, London: Macmillan 186-204.
