%0 Journal Article %A S. V. Zhestkov %T On the convergence property for linear normal periodic partial differential systems %J Differencialʹnye uravneniâ %D 1994 %P 902-904 %V 30 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1994_30_5_a20/ %G ru %F DE_1994_30_5_a20