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@article{IVM_1961_2_a10, author = {L. P. Lebedeva}, title = {A problem of {S.\,M.~Nikol'ski\u{\i}} for an approximation method}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {109--125}, publisher = {mathdoc}, number = {2}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1961_2_a10/} }
L. P. Lebedeva. A problem of S.\,M.~Nikol'ski\u{\i} for an approximation method. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (1961), pp. 109-125. http://geodesic.mathdoc.fr/item/IVM_1961_2_a10/