YaozongTang, QingzhiYang & GangLuo. (2021). Convergence Analysis on SS-HOPM for BEC-Like Nonlinear Eigenvalue Problems.
            <i>Journal of Computational Mathematics</i>. <i>39</i> (4).
            621-632.
         doi:10.4208/jcm.2005-m2019-0298