%0 Journal Article %A M. Yu. Bogdanova %T A criterion for the instability of the zero solution of a stationary differential system %J Differencialʹnye uravneniâ %D 1980 %P 195-200 %V 16 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1980_16_2_a0/ %G ru %F DE_1980_16_2_a0