1.
Youcef Z, Bachouche K, Moussaoui T. Existence of nonnegative solution for a boundary value problem via upper and lower method on the half-line. Proyecciones (Antofagasta, On line) [Internet]. 2024May15 [cited 2024Jul.16];43(3):665-82. Available from: https://www.revistaproyecciones.cl/index.php/proyecciones/article/view/5202