%0 Journal Article %A A. I. Perov %A I. D. Kostrub %T Signs of regularity and stability of differential equations of higher order %J Vestnik rossijskih universitetov. Matematika %D 2018 %P 674-678 %V 23 %N 124 %U http://geodesic.mathdoc.fr/item/VTAMU_2018_23_124_a10/ %G ru %F VTAMU_2018_23_124_a10