SHLEPAKOV, O. R. Asymptotic Representations for the Solutions of One Class of Nonlinear Differential Equations of the Second Order. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 67, n. 9, p. 1285–1293, 2015. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2065. Acesso em: 5 dec. 2025.