@article{IVM_1970_9_a10,
     author = {E. V. Oshman},
     title = {Chebyshev sets and the continuity of metric projection},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {78--82},
     year = {1970},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1970_9_a10/}
}