1. L. D. Akulenko, D. D. Leshchenko, and F. L. Chernous'ko, "Rapid motion about a fixed point of a heavy rigid body in a resisting medium," Izv. Akad. Nauk SSSR, Mekh. Tverd. Tela, No. 3, 5?13 (1982).
2. Yu. P. Artyukhin, L. I. Kargu, and V. L. Simaev, Control Systems for Spacecraft Stabilized by Rotation [in Russian], Nauka, Moscow (1979).
3. I. I. Blekhman, N. V. Butenin, R. F. Ganiev, et al., Vibrations in Technology [in Russian], Vol. 2, Vibrations of Nonlinear Mechanical Systems, Mashinostroenie, Moscow (1979).
4. V. M. Volosov and B. I. Morgunov, Method of Averaging in the Theory of Nonlinear Vibrational Systems [in Russian], Moscow State Univ., Moscow (1971).
5. V. A. Kuryakov, "Rotation about a fixed point of a symmetric rigid body in a medium with quadratic drag," Prikl. Mekh.,22, No. 1, 123?126 (1986).