Y. A. Sharifov, “Optimality conditions in problems of control over systems of impulsive differential equations with nonlocal boundary conditions”, Ukr. Mat. Zhurn., vol. 64, no. 6, pp. 836–847, Jun. 2012, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2621