2Brainard S L. An empirical assessment of the proximity-concentration tradeoff between multinational sales and trade.NBER Working Paper No.4580[R].1993.
3Yeaple S R. The role of skill endowments in the structure of U.S.outward foreign direct investment[J].The Review of Economics and Statistics,2003,(03).
4Hijzen A,Gorg H,Manchin M. Cross-border mergers and acquisitions and the role of trade costs[J].{H}European Economic Review,2008,(05).
5Tekin-Koru A. Asymmetric effects of trade costs on entry modes:Firm level evidence[J].{H}European Economic Review,2012,(02).
6Blanchard P,Gaigné C,C Mathieu. Trade costs and international strategy of firms:the role of endogenous prod-uct differentiation[J].{H}REGIONAL SCIENCE AND URBAN ECONOMICS,2012,(06).