1. merle, R. B., D. B. Schoelemn, and N. A. Smykacz, Criteria for Predicting Lmding Approach Speed Eased on an Analog Computer Analysis of 21 Jet-Propelled Aircraft, Chance-Vought Report AER-EOR-13202 ,25 October 1960.
2. Lean, D., and R. Eaton, The Influence of Drag Characteristics on the Choice of Landing Approach Speeds ,AGARD Report 122, 1957.