1. “Automatic Landing System,” Advisory Circular 20–57A, FAA, January 1971
2. “Criteria for Approving Category I and Category II Landing Minima for FAR121 Operations,” FAA Advisory Circular 120–29, September 1970
3. “Criteria for Approval of Category III A Landing Weather Minima,” FAA Advisory Circular 120–28A, January 1973
4. “A New Guidance System for Approach and Landing,” Special Committee—117 Radio Technical Commission for Aeronautics, Document No. DO-148, December 18, 1970
5. “Bendix-Bell MLS Phase II Contract DPT, FA72WA,” Final Report, July 1974