Federal Reserve Bank of St. Louis and Bullard, James. "Public and Private Currency Competition : Press Release : Central Bank Research Association 2019 Annual Meeting, Columbia University and Federal Reserve Bank of New York, New York, N.Y." in Statements and Speeches of James Bullard (July 19, 2019). https://fraser.stlouisfed.org/title/7161/item/654907/content/pdf/bullard_20190719_pressrelease, accessed on May 10, 2026.