7Adler, M., C. Brunel, G. C. Hufbauer, and J. J. Schott (2009), "What's on the Table?" The Doha Round as of August 2009, Peterson Institute for International Economics Working Paper09-6, August.
8Laird S, Yeats A. Tariff cutting formulas and complications[M]. Washington DC: World Bank Press, 2001:18- 19.
9Panagariya A. Developing countries in Doha: a political economy analysis[J ]. World Economy, 2003,25 (9) : 1205 - 1233.
10Tina Trollas. Agricultural tariffsan analysis of the tariff structure prior to the WTO Doha development round[EB/OL]. (2009 - 02 - 16). http://www, sli. lu. se/eng-item-detail, asp? activity-id = 52, 2000 - 02 - 20/2009 - 02 - 16.
