Neagu N, Cozma D, Popa M. INVARIANT METHODS FOR STUDYING STABILITY OF UNPERTURBED MOTION IN TERNARY DIFFERENTIAL SYSTEMS WITH POLYNOMIAL NONLINEARITIES. BMJ [інтернет]. 19Лют2017 [cited 4Трав2024];4(3-4). Available from: https://bmj.fmi.org.ua/index.php/adm/article/view/219