TY  - JOUR
AU  - A. D. Mednykh
TI  - On branched coverings of Riemann surfaces with the trivial group of covering transformations
JO  - Doklady Akademii Nauk
PY  - 1977
SP  - 1267
EP  - 1269
VL  - 235
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1977_235_6_a7/
LA  - ru
ID  - DAN_1977_235_6_a7
ER  -