%0 Journal Article %A G. A. Grigoryan %T Stability Criterion for Systems of Two First-Order Linear Ordinary Differential Equations %J Matematičeskie zametki %D 2018 %P 831-840 %V 103 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2018_103_6_a2/ %G ru %F MZM_2018_103_6_a2