Cai, Li, and Fubao Zhang. “Semiclassical States for Schrödinger-Poisson System With Hartree-Type Nonlinearity”. Topological Methods in Nonlinear Analysis 59, no. 2B (March 13, 2022): 779–817. Accessed December 3, 2022. https://apcz.umk.pl/TMNA/article/view/37694.