On eigenvalues of p-biharmonic operator and associated concave-convex type equation. Gulf Journal of Mathematics, [S. l.], v. 13, n. 1, p. 54–87, 2022. DOI: 10.56947/gjom.v13i1.927. Disponível em: https://gjom.org/index.php/gjom/article/view/927. Acesso em: 11 nov. 2026.