%0 Journal Article %A È. V. Musafirov %T Simplicity of Linear Differential Systems %J Differencialʹnye uravneniâ %D 2002 %P 570-572 %V 38 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2002_38_4_a17/ %G ru %F DE_2002_38_4_a17