6Fujita, M. and P. Krugman, 1995, "When is the Economy Monocentric? Yon Th u hen and Chamberlin Unified", Regional Science Urban Economics Vol.25, No.4, pp. 505-528. 被引量:1
7Grossman, Gene M., 1992, Imperfect Competition and International Trade, Cambridge:The MIT Press. 被引量:1
8Heipman, Elhanan and Krugman, Paul R., 1989, Trade Policy and Market Structure, Cambridge: The MIT Press. 被引量:1