1. A.E. Raymond, Ground influence on airfoils, NACA Technical Note 67, 1921
2. E.G. Reid, A full scale investigation of ground effect, NACA Technical Report 265, 1927
3. Aerodynamics of a Lifting System in Extreme Ground Effect;Rozhdestvensky,2000
4. Fundamentals of Aerodynamics;Anderson,2001
5. Historical review of WIG vehicles;Ollila;J. Hydronaut.,1980