%0 Journal Article %A Boumaza, Hakim %A Stolz, Günter %T Positivity of Lyapunov exponents for Anderson-type models on two coupled strings %J Electronic journal of differential equations %D 2007 %V 2007 %U http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a44/ %G en %F EJDE_2007__2007__a44