CAI, Li and ZHANG, Fubao. Semiclassical states for Schrödinger-Poisson system with Hartree-type nonlinearity. Topological Methods in Nonlinear Analysis. Online. 13 March 2022. Vol. 59, no. 2B, pp. 779 - 817. [Accessed 22 July 2024]. DOI 10.12775/TMNA.2021.036.