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@article{DAN_1957_117_4_a6, author = {S. M. Nikol'skii}, title = {On a variation problem of {Hilbert}}, journal = {Doklady Akademii Nauk}, pages = {573--575}, publisher = {mathdoc}, volume = {117}, number = {4}, year = {1957}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1957_117_4_a6/} }
S. M. Nikol'skii. On a variation problem of Hilbert. Doklady Akademii Nauk, Tome 117 (1957) no. 4, pp. 573-575. http://geodesic.mathdoc.fr/item/DAN_1957_117_4_a6/