1. J. D. Revell, G. Healy and 1. Gibson, "Mcthods for the Prediction of Airframe Aerodynamic Noise," AlAA Paper No. 75-539, March 197.5.
2. R. E. Pcndley, "Recent Advances in the Technology of Aircraft Noisc Control," AIAA PaperNo. 75-317, February 197.5.