1. Moiseyev N, N., Rumyantsev V. V. Dynamic Stability of Bodies Containing Fluid. Springer Verlag N. Y., 1968.
2. Rumyantsev V. V. On the Motion and Stability of Elastic Body with Cavity Containing Fluid. (R) PMM, vol.33, No. 6, 1969.
3. Lyapunov A. M. The General Problem of Stability of Motion (R). Collected Works, vol.2, Acad. Sci. USSR Press, 1956
4. Rumyantsev V. V. Obustoychivosti dvizheniya po otnosheniyu k chasti peremennykh. Vestnik Moscow State Univ., No. 4, 1957.
5. Chetayev N. G. Stability of Motion, Pergamon Press, N. Y., 1961.