3Clark B.P.Uncertainty,Exchange Risk,and the Level of International Trade.Western Economic Journal 1973(11):109-116.
4Baron P.D.Fluctuating Exchange Rates and the Pri-cing of Exports.Economic Inquiry,1976(9):52-63.
5Peter Clark,Natalia Tamirisa,Shang-jin Wei,Azim Sadikov,and Li Zengl Exchange Rate V-olatility and Trade Flows:Some New Evidence [C].2004,IMF working Paper.