I. Y. . Denisova, “Reachability and stability of invariant set of a system of stochastic differential equations ”, Ukr. Mat. Zhurn., vol. 44, no. 4, pp. 568–572, Apr. 1992, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/7903