American Airlines, “November Line of Sale Analysis”, memo to R. E. Murray from S. D. Nason, December 3, 1981.
56
Tefft, Sheila, “Reservation Systems’ Bias a Sore Spot for Smaller Airlines”, Chicago Tribune, February 11, 1983, http://archives.chicagotribune.com/1983/02/11/page/87/article/new-technology.
