TY - JOUR AU - V. V. Aleksandrov TI - On the Bulgakov problem of the accumulation of perturbations JO - Doklady Akademii Nauk PY - 1969 SP - 526 EP - 528 VL - 186 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1969_186_3_a9/ LA - ru ID - DAN_1969_186_3_a9 ER -