%0 Journal Article %A V. V. Aleksandrov %T On the Bulgakov problem of the accumulation of perturbations %J Doklady Akademii Nauk %D 1969 %P 526-528 %V 186 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_186_3_a9/ %G ru %F DAN_1969_186_3_a9