[1]
Y. I. Kaplun and V. G. Samoilenko, “On Extendability of Solutions of Differential Equations to a Singular Set”, Ukr. Mat. Zhurn., vol. 55, no. 3, pp. 373–378, Mar. 2003, Accessed: Feb. 17, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3911