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Input substitution and the concept of the effective rate of protection
Ethier, Wilfred, (1972)
Leitfaden Risikoanalyse bei den Zollkontrollen
Eurotoll : European research project for toll effects and pricing strategies
(1999)
The check's in the mail : why the United States lags in the adoption of cost-saving electronic payments
Humphrey, David B., (2000)
Substitution of noncash payment instruments for cash in Europe
Snellman, Jussi, (2000)
Realizing the gains from electronic payments : costs, pricing, and payment choice
Humphrey, David B., (1999)