GUIRO, A.; IBRANGO, I. Existence of solutions for discrete boundary value problems with second order dependence on parameters. CUBO, A Mathematical Journal, [S. l.], v. 19, n. 3, p. 57–67, 2017. DOI: 10.4067/S0719-06462017000300057. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1630. Acesso em: 17 may. 2024.