@article{EJDE_2007__2007__a177,
     author = {Khafagy,  Salah A. and Serag,  Hassan M.},
     title = {Maximum principle and existence of positive solutions for nonlinear systems involving degenerate {\(p\)-Laplacian} operators},
     journal = {Electronic journal of differential equations},
     year = {2007},
     volume = {2007},
     zbl = {1137.35322},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a177/}
}