9Bemhofen, D. M. and Xu,P. ,2000. "Exchange Rates and Market Power: Evidence from the Petrochemical Industry. "Journal of International Economics, Vol. 52 ( 2 ) , pp. 283 - 297.
10Betts, C. and Devereux, M. , 1996. "The Exchange Rate in a Model of Pricing -to - Market. "European Economics, Vol. 50 (1) , pp. 215 - 244.