HADDOUCHI, F.; BENAICHA, S. Some Remarks on Positive Solutions of Nonlinear Problems at Resonance. Journal of Informatics and Mathematical Sciences, [S. l.], v. 3, n. 3, p. 291–293, 2011. DOI: 10.26713/jims.v3i3.59. Disponível em: http://rgnpublications.com/journals/index.php/jims/article/view/59. Acesso em: 29 mar. 2024.