Lacker, Jeffrey Malcolm. "Should We Subsidize the Use of Currency?," in Federal Reserve Bank of Richmond. "Winter 1993, Vol. 79, No. 1," Economic Quarterly (Federal Reserve Bank of Richmond) (Winter 1993) : 47-73. https://fraser.stlouisfed.org/title/960/item/477376/toc/501845 , accessed on April 25, 2024.