Khademloo , Somayeh and Mohsenhi , Rahelh. (2014). Multiple Positive Solutions for Semilinear Elliptic Equations Involving Subcritical Nonlinearities in <em>R</em><sup><em>N</em></sup>.
            <i>Journal of Partial Differential Equations</i>. <i>27</i> (1).
            74-94.
         doi:10.4208/jpde.v27.n1.5