@article{MAIS_2013_20_5_a6,
     author = {G. A. Yusupov},
     title = {Exact {Values} of {Widths} of {Some} {Functional} {Classes} in $L_{2}$ and {Minimization} of the {Constants} in {Inequalities} of {Jackson--Stechkin} {Type}},
     journal = {Modelirovanie i analiz informacionnyh sistem},
     pages = {106--116},
     publisher = {mathdoc},
     volume = {20},
     number = {5},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAIS_2013_20_5_a6/}
}