Borisenko О. V. “Behavior of Non-Autonomous Oscillating System under the Influence of Small Random Perturbations in the Resonance Case ”. Ukrains’kyi Matematychnyi Zhurnal 44, no. 12 (December 4, 1992): 1645–1651. Accessed April 11, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/8190.