Asymptotical behaviour of one class of solutions of nonlinear nonautonomous differential second-kind equations. Neliniini Kolyvannya, [S. l.], v. 14, n. 4, p. 468–481, 2011. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/621. Acesso em: 21 jan. 2026.