@article{IVM_1995_8_a4,
     author = {S. Ya. Serovaǐskiǐ},
     title = {An inverse mapping theorem and extended differentiability in {Banach} spaces},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {39--49},
     year = {1995},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1995_8_a4/}
}