Multiplicity Results for some Quasilinear Differential Systems with Periodic Nonlinearities. Minimax Theory and its Applications, [S. l.], v. 2, n. 1, p. 69–78, 2017. Disponível em: https://journalmta.com/index.php/jmta/article/view/25. Acesso em: 12 nov. 2026.