@article{ZNSL_1981_112_a14,
     author = {V. A. Shlyk},
     title = {Theory of nonunivalent mappings of multiply connected domains},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {184--197},
     year = {1981},
     volume = {112},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_112_a14/}
}