TY - JOUR AU - A. I. Perov AU - I. D. Kostrub TI - Signs of regularity and stability of differential equations of higher order JO - Vestnik rossijskih universitetov. Matematika PY - 2018 SP - 674 EP - 678 VL - 23 IS - 124 UR - http://geodesic.mathdoc.fr/item/VTAMU_2018_23_124_a10/ LA - ru ID - VTAMU_2018_23_124_a10 ER -