SlyusarchukV. E. “General Theorems on the Existence and Uniqueness of Solutions of Impulsive Differential Equations”. Ukrains’kyi Matematychnyi Zhurnal 52, no. 7 (July 25, 2000): 954-964. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4494.