@article{MZM_1981_29_4_a6,
     author = {V. A. Skvortsov},
     title = {Certain estimates of approximation of functions by {Ces{\cyra}ro} means of {Walsh{\textendash}Fourier} series},
     journal = {Matemati\v{c}eskie zametki},
     pages = {539--547},
     year = {1981},
     volume = {29},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1981_29_4_a6/}
}