@article{DAN_1985_284_6_a0,
     author = {V. Ya. Arsenin and A. A. Timonov},
     title = {Construction of regularizing operators that are close to optimal},
     journal = {Doklady Akademii Nauk},
     pages = {1289--1293},
     publisher = {mathdoc},
     volume = {284},
     number = {6},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_284_6_a0/}
}