1. Karapetyan, A. V. and Rumyantsev, V. V. Stability of Conservative and Dissipative Systems (in Russian), Vol. 6, Itogi Nauki i Tekhniki, Obshchaya Mekhanika, Moscow, 128 (1983)
2. Karapetyan, A. V. Stability of Steady Motions (in Russian), Editorial URSS, Moscow, 165 (1998)
3. Mei, F. X., Shi, R. C., Zhang, Y. F., and Zhu, H. P. Stability of Motion of Constrained Mechanical Systems (in Chinese), Beijing Institute of Technology Press, Beijing (1997)
4. Mei, F. X. On stability of equilibrium states of nonlinear nonholonomic systems (in Chinese). Chinese Science Bulletin, 37(1), 82–85 (1992)
5. Mei, F. X. On the stability of equilibria of nonlinear nonholonomic systems. Chinese Science Bulletin (English Edition), 37(16), 1397–1401 (1992)