4Hillman, j. Nontariff Agricultural Trade Barrier Revisited. Paper presented at international Agricultural Trade Research Consortium, Tusco Az., Working paper 06 - 2, dec.
5Gallagher. Paul. International Merketing Margins for Agricultural Products :Effects of some Nontariff Trade Barriers. Amer. J. of Agr. Econ. 80( may 2007) :325 - 336.
1Swinnn,JehanF.M.,jill J.McCluskey,and Nathalie Francken. Food Safety,the Media and the Information Market. Agriculture Economics,2005(32): 175-188.
2Schmiz ,Andrew, Charles B.Moss,and Troy G.Schmitz.Ethanll: No Free Lunch.Journal of Agricultural and Food Industrial Organization 5 (2):Article 3.Berkeley Electrionic Press, Berkeley,California.2007.
3Dwght R.Sanders,Scott H.Irwin,and Robert P.Merrin.The Adequacy of Speculation in Agricultural Futures Markets: Too Much OF a Good Thing?Applied Economic Perspectives and Policy,2010,32(1):77-94.
4J.Edward Taylor, Antonio Yunez Naude and Nancy Jesurun-Clements.Does Agricultural Trade Liberalization Reduce Rural Welfare in Less Developed Countries?The Case of CAFI'A .Applied Economic Perspectives and Policy,2010,32(1):95-116.
