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Coinage, debasements, and Gresham's laws
Smith, Bruce D., (1997)
THE TIMING OF TAX COLLECTIONS AND THE STRUCTURE OF “IRRELEVANCE” THEOREMS IN A CASH-IN-ADVANCE MODEL
Sargent, Thomas J., (2010)
Irrelevance of open market operations in some economies with government currency being dominated in rate of return
Sargent, Thomas J., (1987)