%0 Journal Article %A Soukup, Václav %T On formulation of state equations for linear nonstationary discrete-time system %J Kybernetika %D 1972 %P -429 %V 08 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1972__8_5_a4/ %G en %F KYB_1972__8_5_a4