@article{EJDE_2007__2007__a44,
     author = {Boumaza,  Hakim and Stolz,  G\"unter},
     title = {Positivity of {Lyapunov} exponents for {Anderson-type} models on two coupled strings},
     journal = {Electronic journal of differential equations},
     year = {2007},
     volume = {2007},
     zbl = {1187.82055},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a44/}
}