@article{IVM_1969_4_a7,
     author = {E. V. Oshman},
     title = {Chebyshev sets, continuity of the metric projection and certain geometric properties of the unit sphere in {a~Banach} space},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {38--46},
     publisher = {mathdoc},
     number = {4},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1969_4_a7/}
}