1. Historical development of aircraft flutter;Garrick;Journal of Aircraft,1981
2. Prop-rotor stability at high advance ratio;Hall;Journal of the American Helicopter Society,1966
3. Investigation of tilt rotor VTOL aircraft rotor-pylon stability;Edenborough;Journal of Aircraft,1968
4. Dynamic structural aeroelastic stability testing of the XV-15 tilt rotor research aircraft;Schroers;NASA TM-84293,1982
5. In-flight structural dynamic characteristics of the XV-15 tilt-rotor research aircraft;Bilger;AIAA Paper 81-0612,1981