Whitehead, David D. "Firms Involved in ATM, POS, and Home Banking: A Survey," in Federal Reserve Bank of Atlanta. "July/August 1984, Volume 69, Number 7," Economic Review (Federal Reserve Bank of Atlanta) (July 1984) : 13-19. https://fraser.stlouisfed.org/title/884/item/34981/toc/334096 , accessed on May 9, 2024.