@article{DAN_1980_253_2_a4,
     author = {Yu. L. Ershov},
     title = {Multiply valued fields},
     journal = {Doklady Akademii Nauk},
     pages = {274--277},
     publisher = {mathdoc},
     volume = {253},
     number = {2},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_253_2_a4/}
}