1.
Dil’na NZ, Ronto AM. Some new conditions for the solvability of the cauchy problem for systems of linear functional-differential equations. Ukr. Mat. Zhurn. [Internet]. 2004Jul.25 [cited 2024May7];56(7):867–884. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3805