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Common external tariff for the Andean Group
Morawetz, David, (1972)
The tariff history of the United States
Taussig, F. W., (1966)
Effective tariff protection
Grubel, Herbert G., (1971)
Substitution and Two Concepts of Effective Rate of Protection.
Anderson, James, (1969)
Substitution and two concepts of effective rate of protection : comment
Grubel, Herbert G., (1970)
The economics of the enterprise for ASEAN initiative
Naya, Seiji Finch, (2005)