S. MEHAR BANU; S. NALINI; R. ARUL. Oscillation of Third Order Nonlinear Difference Equations With Several Neutral Terms. International Journal of Mathematics And its Applications, [S. l.], v. 6, n. 2 - B, p. 213–221, 2018. Disponível em: https://ijmaa.in/index.php/ijmaa/article/view/718. Acesso em: 3 jul. 2024.