Asymptotic Representations of Proper Nonoscillation Solutions of a Class of Semilinear Differential Equations of the Second Order. Neliniini Kolyvannya, [S. l.], v. 4, n. 2, p. 190–215, 2001. Disponível em: https://nosc.imath.kiev.ua/index.php/nosc/article/view/164. Acesso em: 12 apr. 2026.