1. On stochastic differential equations;Itô;Memoirs of the American Mathematical Society,1951
2. On stability of systems with random parameters;Kac;Journal of Applied Mathematics and Mechanics,1960
3. On the stability of trajectory of Markov processes;Has’minskii;Journal of Applied Mathematics and Mechanics,1962
4. Stochastic Stability of Differential Equations;Has’minskii,1981