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@article{MZM_1979_25_4_a14, author = {S. V. Pukhov}, title = {Inequalities between the {Kolmogorov} and the {Bernstein} diameters in a {Hilbert} space}, journal = {Matemati\v{c}eskie zametki}, pages = {619--628}, publisher = {mathdoc}, volume = {25}, number = {4}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1979_25_4_a14/} }
S. V. Pukhov. Inequalities between the Kolmogorov and the Bernstein diameters in a Hilbert space. Matematičeskie zametki, Tome 25 (1979) no. 4, pp. 619-628. http://geodesic.mathdoc.fr/item/MZM_1979_25_4_a14/