Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1981_29_4_a6, author = {V. A. Skvortsov}, title = {Certain estimates of approximation of functions by {Ces{\cyra}ro} means of {Walsh--Fourier} series}, journal = {Matemati\v{c}eskie zametki}, pages = {539--547}, publisher = {mathdoc}, volume = {29}, number = {4}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1981_29_4_a6/} }
V. A. Skvortsov. Certain estimates of approximation of functions by Cesаro means of Walsh--Fourier series. Matematičeskie zametki, Tome 29 (1981) no. 4, pp. 539-547. http://geodesic.mathdoc.fr/item/MZM_1981_29_4_a6/