英文文献：Differentiated Products And Supply Controls In The Analysis Of Agricultural Trade Liberalization: The Case Of Tobacco
英文文献作者：Beghin, John,Change, Ruey-er
英文文献摘要：
A multimarket model of the U.S. tobacco and cigarette industries is used to demonstrate the· fallacious implications of trade policy reform analysis that ignore imperfect substitution and supply controls. This omission underlies the PSE, nominal protection ratio, and price gap adjustment methodologies.