1. A theory of rotor blade motion stability in powered flight;Young;Journal of the American Helicopter Society,1964
2. A simplified theory of hingeless rotors with application to tandem helicopters;Young;Eighteenth Annual Forum of the American Helicopter Society,1962
3. Aeroelastic instability of torsionally rigid helicopter blades;Hohenemser;Journal of the American Helicopter Society,1967
4. Linear flap-lag dynamics of hingeless helicopter rotor blades in hover;Ormiston;Journal of the American Helicopter Society,1972
5. Aeroelastic instabilities of hingeless helicopter blades;Friedmann;American Institute of Aeronautics and Astronautics 11th Aerospace Sciences Meeting January 1973, AIAA Paper No. 73-193,1973