@article{AL_2002_41_6_a1,
     author = {Yu. L. Ershov},
     title = {Multi-Valued {Fields.~II}},
     journal = {Algebra i logika},
     pages = {682--712},
     year = {2002},
     volume = {41},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2002_41_6_a1/}
}