Liao , JiafengChen , Qingfang and Zhu , Lijun. (2021). Existence of Positive Solutions for the Nonhomogeneous Schrödinger-Poisson System with Strong Singularity.
            <i>Journal of Partial Differential Equations</i>. <i>34</i> (2).
            186-200.
         doi:10.4208/jpde.v34.n2.6