@article{DAN_1958_118_5_a4,
     author = {S. I. Zukhovitskii and G. I. \`Eskin},
     title = {Chebyshev approximation in a {Hilbert} ring},
     journal = {Doklady Akademii Nauk},
     pages = {870--872},
     publisher = {mathdoc},
     volume = {118},
     number = {5},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_118_5_a4/}
}