1.
Samoilenko AM. On the reducibility of a system of ordinary differential equations in the vicinity of a smooth integral manifold . Ukr. Mat. Zhurn. [Internet]. 1966 Oct. 27 [cited 2025 Dec. 6];18(6):41-64. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/8458