SUN, J.; WU, T.- fang. Existence and multiplicity of positive solutions for a Schrodinger-Poisson system with a perturbation. Topological Methods in Nonlinear Analysis, [S. l.], v. 46, n. 2, p. 967–998, 2015. DOI: 10.12775/TMNA.2015.079. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2015.079. Acesso em: 25 oct. 2021.