@article{UMJ_2017_3_2_a9,
     author = {Mukim S. Saidusajnov},
     title = {$\mathcal{K}$-functionals and exact values of $n$-widths in the {Bergman} space},
     journal = {Ural mathematical journal},
     pages = {74--81},
     publisher = {mathdoc},
     volume = {3},
     number = {2},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UMJ_2017_3_2_a9/}
}