@article{TIMM_2016_22_4_a26,
     author = {K.Tukhliev},
     title = {Best approximations and widths of some classes of convolutions in $L_{2}$},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {284--294},
     publisher = {mathdoc},
     volume = {22},
     number = {4},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2016_22_4_a26/}
}