Stability of the integral manifold of an oscillating system with slowly changing frequencies and an impulsive effect. Neliniini Kolyvannya, [S. l.], v. 7, n. 3, p. 365–394, 2004. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/316. Acesso em: 21 jan. 2026.