@article{IVM_1997_2_a1,
     author = {N. M. Benkafadar and B. D. Gel'man},
     title = {On the local degree for a class of multivalued field},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {24--34},
     publisher = {mathdoc},
     number = {2},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1997_2_a1/}
}