Voir la notice de l'article provenant de la source Math-Net.Ru
@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}, publisher = {mathdoc}, number = {9}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1988_9_a5/} }
E. I. Efimova. Sard's theorem on a~Banach space. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (1988), pp. 37-39. http://geodesic.mathdoc.fr/item/IVM_1988_9_a5/