@article{EJDE_2004__2004__a121,
     author = {Voros,  Imre},
     title = {Stability properties of non-negative solutions of semilinear symmetric cooperative systems},
     journal = {Electronic journal of differential equations},
     year = {2004},
     volume = {2004},
     zbl = {1073.35108},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2004__2004__a121/}
}