@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/}
}