Mester, Loretta Jean. "Efficient Production of Financial Services : Scale and Scope Economies," in Federal Reserve Bank of Philadelphia. "January/February 1987," Business Review (Federal Reserve Bank of Philadelphia) (January/February 1987) : 15-25. https://fraser.stlouisfed.org/title/5580/item/557632/toc/523662 , accessed on May 4, 2024.