TY - JOUR AU - M. I. Tramov TI - Oscillatory properties of linear differential equations with JO - Doklady Akademii Nauk PY - 1992 SP - 25 EP - 31 VL - 327 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1992_327_1_a3/ LA - ru ID - DAN_1992_327_1_a3 ER -