[1]
Y. I. Kaplun and V. G. Samoilenko, “Existence and Extendability of Solutions of the Equation $g(t, x) = 0$”, Ukr. Mat. Zhurn., vol. 53, no. 3, pp. 372–382, Mar. 2001, Accessed: Feb. 16, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/4259