Ignat’evA. O., and GladilinaR. I. “On Necessary and Sufficient Conditions for the Asymptotic Stability of Impulsive Systems”. Ukrains’kyi Matematychnyi Zhurnal 55, no. 8 (August 25, 2003): 1035-1043. Accessed July 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3979.