Kamel Akrout & Rafik Guefaifia. (2019). Existence and Nonexistence of Weak Positive Solution for a Class of <em>p</em>-Laplacian Systems.
            <i>Journal of Partial Differential Equations</i>. <i>27</i> (2).
            158-165.
         doi:10.4208/jpde.v27.n2.6