ГУРГУЛА, Степан Іванович; СОБКОВИЧ, Роман Іванович. INVESTIQATION OF THE STABILITY OF SOLUTIONS OF DIFFERENTIAL EQUATIONS WITH IMPULSE ACTION BU THE SECOND LIAPUNOV’S METHOD. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, [S. l.], n. 1(17), p. 120–126, 2019. Disponível em: https://pvntsh.nung.edu.ua/index.php/number/article/view/238. Acesso em: 6 dec. 2025.