Novak, I. H., Samoilenko, A. M., & Stanzhitskii, A. N. (2011). On asymptotic equivalence of solutions of stochastic and ordinary equations. Ukrains’kyi Matematychnyi Zhurnal, 63(8), 1103-1127. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/2788