@article{GDZPPN002445050, title = {Fej\'er means for multivariate Fourier series.}, journal = {Mathematische Zeitschrift}, volume = {221}, year = {1996}, pages = {449-466}, zbl = {0904.42009}, url = {http://dml.mathdoc.fr/item/GDZPPN002445050} }
Berens, Hubert; Xu, Yuan. Fejér means for multivariate Fourier series.. Mathematische Zeitschrift, Tome 221 (1996) pp. 449-466. http://gdmltest.u-ga.fr/item/GDZPPN002445050/