@article{ZVMMF_2004_44_6_a4,
     author = {S. P. Sidorov},
     title = {An estimate for the $n$th minimal error of linear algorithms for an approximation problem},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {997--1001},
     publisher = {mathdoc},
     volume = {44},
     number = {6},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2004_44_6_a4/}
}