TY  - JOUR
AU  - B. I. Rozenfel'd
TI  - Principal bundles whose base spaces satisfy the second countability axiom
JO  - Doklady Akademii Nauk
PY  - 1969
SP  - 758
EP  - 761
VL  - 188
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1969_188_4_a7/
LA  - ru
ID  - DAN_1969_188_4_a7
ER  -