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@article{IVM_1999_6_a11, author = {E. N. Sosov}, title = {On approximation properties of sets in special metric spaces}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {81--84}, publisher = {mathdoc}, number = {6}, year = {1999}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1999_6_a11/} }
E. N. Sosov. On approximation properties of sets in special metric spaces. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1999), pp. 81-84. http://geodesic.mathdoc.fr/item/IVM_1999_6_a11/
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