@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},
     year = {2009},
     volume = {2009},
     zbl = {1175.35043},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a121/}
}