1. Helicopter vibrations: a technological perspective;LOEWY;Journal of the American Helicopter Society,1984
2. A review of research in rotor loads;BOUSMAN;Proceedings of the NASA/Army Rotorcraft Technology Conference, Ames Research Centre, Moffett Field, CA 17–19 March, NASA CP-2495,1987
3. Rotorcraft aeroelastic stability;ORMISTON;Proceedings of the NASA/Army Rotorcraft Technology Conference, Ames Research Centre, Moffett Field, CA, NASA CP-2495,1987
4. Rotorcraft analytical improvement needed to reduce development risk;CRAWFORD;Journal of The American Helicopter Society,1990
5. Stability improvement of the periodic motion of non-linear systems;KRODKIEWSKI;Proceedings of the International Conference on Vibration and Noise,1995