1. K. Itô and H. McKean, Diffusion Processes and Their Sample Paths (Springer- Verlag, Berlin–New York, 1965).
2. R. Z. Has’minskii, Stability of Systems of Differential Equations under Random Perturbations of their Parameters (Nauka, Moscow, 1969) [in Russian].
3. A. D. Venttsel and M. I. Freidlin, Fluctuations in Dynamical Systems Subject to Small Random Perturbations (Nauka, Moscow, 1979) [in Russian].
4. A. M. Lyapunov, General Problem of the Stability of Motion (Gos. Izd. Tekh. Teor. Lit., Moscow –Leningrad, 1950) [in Russian].
5. B. F. Bylov, R. I. Vinograd, D. M. Grobman, and V. V. Nemytskii, Theory of Lyapunov Exponents and Its Application to Problems of Stability (Nauka, Moscow, 1966) [in Russian].