HONGYAN GUAN; YUANHONG YU. Oscillation of Second Order Quasi-linear Neutral Delay Differential Equations. International Journal of Mathematics And its Applications, [S. l.], v. 3, n. 2, p. 17–24, 2015. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/416. Acesso em: 4 may. 2024.