Multiple Solutions for a Fractional $p$-Laplacian Equation with Concave Nonlinearities. Journal of Partial Differential Equations, [S. l.], v. 33, n. 2, p. 93–108, 2020. DOI: 10.4208/jpde.v33.n2.1. Disponível em: https://global-sci.com/index.php/jpde/article/view/4337. Acesso em: 5 dec. 2025.