Multiple solutions for a class of elliptic equations of $p$-Laplacian type with combined nonlinearities. Nonlinear Studies, [S. l.], v. 20, n. 3, 2013. Disponível em: https://www.nonlinearstudies.com/index.php/nonlinear/article/view/742. Acesso em: 14 oct. 2025.