5Lee H, Lloyd P J. Intra-Industry Trade in Services: Frontiers of Re-search in Intra-Industry Trade[M].London: Macmillan, 2002 : 56-58.
6Shelburne R C, Gonzalez J G. The Role of Intra -industry Trade in the Service Sector[C]//Michael G Plummer (ed.). Empirical Methods in International Trade, Essaysin Honor of Mordechai Kreinin. Massachusetts: Edward Elgar Publishing Limited, 2004:110-128.
7Sichei M, Harmse C, Kanfer F. Determinants of South Africa-US Intra-Industry Trade in Services: A Wild Bootstrap Dynamic Panel Data Analysis [J]. South African Journal of Economics, 2007,75:521-539.
8Grubel, H. G. and Lloyd, P. J. The Empirical Measurement of/ntra - Industry Trade [J]. Economic Record, 1971, (4) : 494 - 517.
9Brander, J. and Krugman, P. A 'RECIPROCAL DUMPING' MODEL OF INTERNATIONAL TRADE [J]. Jour- nal of International Economics, 1983, (15): 313 - 321.
10Dixit, A. and Stiglitz, J. Monopolistic Competidon and Optimum Product Diversity [ J ]. The American Economic Review, 1977, (67): 297-308.