TY  - JOUR
AU  - A. V. Arkhangel'skii
TI  - $R$-factor mappings of spaces with a countable base
JO  - Doklady Akademii Nauk
PY  - 1986
SP  - 14
EP  - 17
VL  - 287
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1986_287_1_a1/
LA  - ru
ID  - DAN_1986_287_1_a1
ER  -