@article{DAN_1971_201_2_a0,
     author = {V. V. Zhuk},
     title = {Some sharp inequalities between uniform best approximations of periodic functions},
     journal = {Doklady Akademii Nauk},
     pages = {263--265},
     publisher = {mathdoc},
     volume = {201},
     number = {2},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_201_2_a0/}
}