1. PrandtlL.TietjensO. G., Applied Hydro and Aeromechanics, Dover Books, New York, 1957, pp. 185–209.
2. PrandtlL. “Theory of Lifting Surfaces,” NACA TN-9, July 1920.
3. Computation of induced drag for elliptical and crescent-shaped wings
4. McCormickB. W., Aerodynamics, Aeronautics, and Flight Mechanics, 2nd ed., Wiley, New York, 1995, pp. 112–118.
5. Aerodynamic Impact of Aspect Ratio at Low Reynolds Number