1. GrayV. “Correlations Among Ice Measurements, Impingement Rates, Icing Conditions, and Drag Coefficients for Unswept NACA 65A004 Airfoil,” NASA TN-4151, 1958.
2. GrayV. H.von GlahnU. H. “Aerodynamic Effects Caused by Icing of an Unswept NACA 65A004 Airfoil,” NACA TN-4155, 1958.
3. FlemmingR. J.LednicerD. A. “High Speed Ice Accretion on Rotorcraft Airfoils,” NASA CR-3910, 1985.
4. An experimental study of airfoil icing characteristics
5. also NASA TM-82790.