MultipleNonradialSolutionsforaNonlinear EllipticRadialProblem: anImprovedResult. Minimax Theory and its Applications, [S. l.], v. 4, n. 1, p. 189–204, 2019. Disponível em: https://journalmta.com/index.php/jmta/article/view/61. Acesso em: 13 nov. 2026.