1. Theodorsen, T., 1935, "General Theory of Aerodynamic Instability and the Mechanism of Flutter," NACA Report 496.
2. Bisplinghoff, R. L., Ashley, H., and Halfman, R. L., 1955, "Aeroelasticity," Addison-Wesley Publishing Company, Inc., Cambridge, MA.
3. A Conformal Mapping Model for Force Response of Arbitrarily Shaped Thick Foils to Incident Turbulence
4. Gust response for flat-plate airfoils and the Kutta condition
5. Halfman, R. L., 1952, "Experimental Aerodynamic Derivatives of a Sinusoidally Oscillating Airfoil in Two-dimensional Flow," NACA Report 1108.