Romanyshyn IM, Synyts’kyi LA. Construction of approximations for a stationary solution of a system of singular ordinary differential equations. Ukr. Mat. Zhurn. [Internet]. 1997Jun.25 [cited 2024Nov.24];49(6):774–778. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/5061