%0 Journal Article
%A B. I. Rozenfel'd
%T Principal bundles whose base spaces satisfy the second countability axiom
%J Doklady Akademii Nauk
%D 1969
%P 758-761
%V 188
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1969_188_4_a7/
%G ru
%F DAN_1969_188_4_a7