Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1979_244_3_a2, author = {A. D. Mednykh}, title = {On unramified coverings of compact {Riemann} surfaces}, journal = {Doklady Akademii Nauk}, pages = {529--532}, publisher = {mathdoc}, volume = {244}, number = {3}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1979_244_3_a2/} }
A. D. Mednykh. On unramified coverings of compact Riemann surfaces. Doklady Akademii Nauk, Tome 244 (1979) no. 3, pp. 529-532. http://geodesic.mathdoc.fr/item/DAN_1979_244_3_a2/