A. M. Samoilenko and A. A. . Boichuk, “Linear Neterov’s boundary problems for differential systems with pulse action”, Ukr. Mat. Zhurn., vol. 44, no. 4, pp. 564–568, Apr. 1992, Accessed: Feb. 17, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/7902