Yao , Fengping and Zhou , Shulin. (2012). Global Estimates in Orlicz Spaces for <em>p</em>-Laplacian Systems in <em>R</em><sup><em>N</em></sup>.
            <i>Journal of Partial Differential Equations</i>. <i>25</i> (2).
            103-114.
         doi:10.4208/jpde.v25.n2.1