QIAN, A. Solutions for Some Elliptic Problems with Double Resonance. Communications in Mathematics and Applications, [S. l.], v. 4, n. 3, p. 181–187, 2014. DOI: 10.26713/cma.v4i3.193. Disponível em: https://www.rgnpublications.com/journals/index.php/cma/article/view/193. Acesso em: 3 may. 2024.