@article{IVM_1988_9_a5,
     author = {E. I. Efimova},
     title = {Sard's theorem on {a~Banach} space},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {37--39},
     year = {1988},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1988_9_a5/}
}