Parrott, Sharon and Carlson, John B. "Demand for M2, Opportunity Cost, and Financial Change," in Federal Reserve Bank of Cleveland. "1991 Quarter 2, Vol. 27, No. 2," Economic Review (Federal Reserve Bank of Cleveland) (1991 Quarter 2) : 3-12. https://fraser.stlouisfed.org/title/1328/item/4660/toc/111266 , accessed on April 25, 2024.