@article{02124508, title = {On estimates for the moduli of smoothness of functions with a transformed Fourier series.}, journal = {Publications de l'Institut Math\'ematique. Nouvelle S\'erie}, volume = {73(87)}, year = {2003}, pages = {121-128}, doi = {10.2298/PIM0373121S}, zbl = {1056.42003}, language = {en}, url = {http://dml.mathdoc.fr/item/02124508} }
Tikhonov, Sergej Yu. On estimates for the moduli of smoothness of functions with a transformed Fourier series.. Publications de l'Institut Mathématique. Nouvelle Série, Tome 73(87) (2003) pp. 121-128. doi : 10.2298/PIM0373121S. http://gdmltest.u-ga.fr/item/02124508/