Moaaz O, Cesarano C. Oscillation results for a certain class of fourth-order nonlinear delay differential equations. Proyecciones (Antofagasta, On line) [Internet]. 2021Mar.15 [cited 2024Apr.20];40(2):505-23. Available from: https://www.revistaproyecciones.cl/index.php/proyecciones/article/view/4003