Bobochko, V.N. (1998) “On the structure of solutions of a system of singularly perturbed differential equations with nondiagonalizable limit operator”, Ukrains’kyi Matematychnyi Zhurnal, 50(7), pp. 867–876. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4867 (Accessed: 7 April 2025).