Nikitin, A. V., and I. V. Samoilenko. “Differential Equations With Small Stochastic Summands under the Levy Approximating Conditions”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 69, no. 9, Sept. 2017, pp. 1242-9, https://umj.imath.kiev.ua/index.php/umj/article/view/1774.