@article{MZM_2013_94_6_a9,
     author = {M. Sh. Shabozov and K. Tukhliev},
     title = {Best {Polynomial} {Approximations} and the {Widths} of {Function} {Classes} in~$L_{2}$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {908--917},
     publisher = {mathdoc},
     volume = {94},
     number = {6},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2013_94_6_a9/}
}