@article{01779421, title = {Ces\`aro means of trigonometric Fourier series.}, journal = {Georgian Mathematical Journal}, volume = {9}, year = {2002}, pages = {53-56}, zbl = {0997.42004}, language = {en}, url = {http://dml.mathdoc.fr/item/01779421} }
Goginava, U. Cesàro means of trigonometric Fourier series.. Georgian Mathematical Journal, Tome 9 (2002) pp. 53-56. http://gdmltest.u-ga.fr/item/01779421/