7Daniel Tsiddon. The Behavior of the Aggregate Price Level [ J]. The Review of Economic Studies, 1993 (60).
8Paul Brenton, John Sheehy, Mart: Vancauteren. Technical Barriers to Trade in the Europeml Union: Importance for Accession Countries[ J~, Journal of Common Market Studies, 2001 (39).
9Hongshik Lee, Innwon Park. In Search of Optimised Regional Trade Agreements and Applications to East Asia [ J ]. The World Economy ,2007 ( 10 ).
10Pierre-Louis Lions,Filomena Pacella. lsoperimetric Inequalities for Convex Cones. Proceedings of the American Mathematical Society, 1990(109).
