请各位帮忙，找几篇英文文献。不胜感激！！要是有翻译成中文的更好。

一.Grubel,H.G.,P.J.Lloyd.Intra-Industry Trade:The Theory and Measurement of
International Trade in Differentiated Products[M].London:Macmillan,1975:36-42.

二Balassa,B.Trade Liberalization among Industrial Country:Objectives and
Alternatives[R].New York:McGraw-Hill for the Council on Foreign Relations,
chapter 5.1967.

三Balassa,B.European Integration:Problems and Countermeasures[J].American Economic
Review,1963,Vol.53

四Dixit,A and Stiglitz,J.E.Monopolistic Competition and optimum Product
Diversity[J].American Economic Review,1977,Vol.67

五Greenaway,D and Milner,C.r.On the Measurement of Intra-industry Trade[J].The
Economic Journal,1983,Vol.93.