%0 Journal Article %A A. V. Kurnysh %T Stability of the solutions of a system of second-order linear differential equations with periodic coefficients %J Differencialʹnye uravneniâ %D 1980 %P 370-373 %V 16 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1980_16_2_a22/ %G ru %F DE_1980_16_2_a22