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Cost recovery and pricing of payment services : theory, methods, and experience
Humphrey, David B. - 1997
Persistent link: https://www.econbiz.de/10010525199
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The evolution of payments in Europe, Japan, and the U.S : lessons for emerging market economies
Humphrey, David B. (contributor) - 1996
Persistent link: https://www.econbiz.de/10010525494