@article{MZM_1973_13_2_a5,
     author = {A. A. Zhensykbaev},
     title = {Exact bounds for the uniform approximation of continuous periodic functions by $r$-th order splines},
     journal = {Matemati\v{c}eskie zametki},
     pages = {217--228},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1973_13_2_a5/}
}