%0 Journal Article %A Commault, Christian %A Descusse, Jacques %A Dion, Jean-Michel %A Torres, J. A. %T Block decoupling invariants: Geometric and transfer matrix characterizations %J Kybernetika %D 1991 %P 345-361 %V 27 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1991__27_4_a6/ %G en %F KYB_1991__27_4_a6