AbildayevaA. D., and DzhumabaevD. S. “Properties of the Isolated Solutions Bounded on the entire axis for a System of Nonlinear Ordinary Differential Equations”. Ukrains’kyi Matematychnyi Zhurnal 68, no. 8 (August 25, 2016): 1132-1138. Accessed November 21, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1907.