Hannan, Timothy H. "Foiling the Bank Robber : What Makes a Difference?," in Federal Reserve Bank of Philadelphia. "July/August 1980," Business Review (Federal Reserve Bank of Philadelphia) (July/August 1980) : 3-8. https://fraser.stlouisfed.org/title/5580/item/557593/toc/523579 , accessed on May 2, 2024.