1.
Petryshyn RI, SopronyukТM. Justification of Averaging Method for Multifrequency Impulsive Systems. Ukr. Mat. Zhurn. [Internet]. 2003Jan.25 [cited 2024Nov.22];55(1):55-. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3887