RomanyshynI. M. and Synyts’kyiL. A. (1997) “Construction of approximations for a stationary solution of a system of singular ordinary differential equations”, Ukrains’kyi Matematychnyi Zhurnal, 49(6), pp. 774–778. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/5061 (Accessed: 27July2024).