@article{EJDE_2011__2011__a64,
     author = {Leadi,  Liamidi and Marcos,  Aboubacar},
     title = {Maximum principle and existence results for nonlinear cooperative systems on a bounded domain},
     journal = {Electronic journal of differential equations},
     year = {2011},
     volume = {2011},
     zbl = {1227.35106},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2011__2011__a64/}
}