1. A. Kantrowitz and C. du P. Donaldson, Preliminary Investigation of Supersonic Diffusers, NACA ACR L5D20 (1945).
2. A. C. Charters, “The spark photography range,” a paper given at the International Congress for Applied Mechanics (September, 1946).
3. A. C. Charters and R. A. Turetsky, “Determination of base pressure from free-flight data,” Aberdeen Ballistic Research Laboratory (March, 1948).