TY  - JOUR
AU  - R. S. Sadyrkhanov
TI  - A finite-to-one covering map criterion
JO  - Doklady Akademii Nauk
PY  - 1983
SP  - 54
EP  - 58
VL  - 273
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1983_273_1_a11/
LA  - ru
ID  - DAN_1983_273_1_a11
ER  -