Federal Reserve Bank of Chicago. "Estimating the Volume of Counterfeit U.S. Currency in Circulation Worldwide : Data and Extrapolation, Policy Discussion Paper 2010-2" in Policy Discussion Papers (Federal Reserve Bank of Chicago)
(March 1, 2010).
https://fraser.stlouisfed.org/title/5290/item/555181, accessed on April 25, 2025.
@FedFRASER