%0 Journal Article %A Leadi, Liamidi %A Marcos, Aboubacar %T Maximum principle and existence results for nonlinear cooperative systems on a bounded domain %J Electronic journal of differential equations %D 2011 %V 2011 %U http://geodesic.mathdoc.fr/item/EJDE_2011__2011__a64/ %G en %F EJDE_2011__2011__a64