@article{IVM_1991_3_a4,
     author = {G. I. Kurapin},
     title = {The implicit mapping theorem for a~class of topological modules},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {20--25},
     year = {1991},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1991_3_a4/}
}