MartynyukA. A., and StavroulakisI. P. “Stability Analysis of Linear Impulsive Differential Systems under Structural Perturbation”. Ukrains’kyi Matematychnyi Zhurnal 51, no. 6 (June 25, 1999): 784–795. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4665.