@article{EJDE_2009__2009__a121,
     author = {Khafagy, Salah A. and Serag, Hassan M.},
     title = {Existence of weak solutions for nonlinear systems involving several $p${-Laplacian} operators},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2009},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a121/}
}