%0 Journal Article %A I. V. Gaishun %A V. v. Goryachkin %T Conditions for the solvability and controllability of linear two-parameter discrete systems %J Differencialʹnye uravneniâ %D 1988 %P 2047-2051 %V 24 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1988_24_12_a3/ %G ru %F DE_1988_24_12_a3