1. 3Blakelock,J.H.,AutomaticControlofAircraftandMissiles,Wiley,NewYork,1965, pp. 296-297.
2. 4Seckel, E., Stability and Control of Airplanes and Helicopters, Academic Press, NewYork, 1964, pp.44-47.
3. 5McCormick, B. W., Aerodynamics, Aeronautics and Flight Mechanics, Wiley, NewYork, 1979, pp.591-594.