1.
Prosenyuk LG. Existence and asymptotic properties of solutions of a real system of differential equations unresolved with respect to the derivative. Ukr. Mat. Zhurn. [Internet]. 1993Oct.25 [cited 2024Sep.1];45(10):1461–1464. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/5952