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@article{DAN_1978_239_2_a1, author = {S. V. Konyagin}, title = {Approximation properties of arbitrary sets in {Banach} spaces}, journal = {Doklady Akademii Nauk}, pages = {261--264}, publisher = {mathdoc}, volume = {239}, number = {2}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1978_239_2_a1/} }
S. V. Konyagin. Approximation properties of arbitrary sets in Banach spaces. Doklady Akademii Nauk, Tome 239 (1978) no. 2, pp. 261-264. http://geodesic.mathdoc.fr/item/DAN_1978_239_2_a1/