@article{EJDE_1998__1998__a17,
     author = {Naulin, Ra\'ul and Vanegas, Carmen J.},
     title = {Instability of discrete systems},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {1998},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_1998__1998__a17/}
}