1. Alifov, A.A. and Frolov, K.V., Vzaimodeistvie nelineinykh kolebatel’nykh sistem s istochnikami energii (Interaction of Nonlinear Oscillatory Systems with Energy Sources), Moscow: Nauka, 1989; Boca Raton, FL: CRC, 2002.
2. Blekhman, I.I., Self-synchronization of vibrators of some vibrating machines, Inzh. Sb., 1953, vol. 16, pp. 49–72.
3. Vibratsii v tekhnike (Vibrations in Engineering), Blekhman, I.I., Ed., Moscow: Mashinostroenie, 1979, Vol.2.
4. Ganiev, R.F. and Kononenko, V.O., On nonlinear oscillations of a rigid body carrying a rotating rotor, Izv. Akad. Nauk SSSR, Mekh., 1965, no. 5, pp. 31–37.
5. Ganiev, R.F. and Kononenko, V.O., Kolebaniya tverdykh tel (Vibration of Solids), Moscow: Nauka, 1976.