Nyamoradi , N.Shekarbigi , M.Razlansari , A. and Yavari , M.. (2013). The Nehari Manifold and Application to a Quasilinear Elliptic Equation with Multiple Hardy-type Terms.
            <i>Journal of Partial Differential Equations</i>. <i>26</i> (3).
            193-216.
         doi:10.4208/jpde.v26.n3.1