%0 Journal Article %A I. V. Gaishun %T Canonical forms of linear discrete two-parameter systems %J Differencialʹnye uravneniâ %D 1999 %P 964-968 %V 35 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1999_35_7_a12/ %G ru %F DE_1999_35_7_a12