Ah-ran Park, and Jin-Mun Jeong. “On Solutions of Semilinear Second-Order Impulsive Functional Differential Equations”. Journal of Computational Analysis and Applications (JoCAAA) 29, no. 6 (December 16, 2021): 1082–1096. Accessed December 19, 2024. https://eudoxuspress.com/index.php/pub/article/view/215.