Краснодембський АМ. PERIODICITY OF DECISIONS OF SOME SYSTEM A FEW NONLINEAR DIFFERENTIAL EQUALIZATIONS OF AN EVEN ORDER. Number [Internet]. 2019 Mar. 5 [cited 2025 Dec. 6];(1(21):45-50. Available from: https://pvntsh.nung.edu.ua/index.php/number/article/view/180