@article{1077493511, author = {Reves, George E. and Sz\'asz, Otto}, title = {Some theorems on double trigonometric series}, journal = {Duke Math. J.}, volume = {9}, number = {1}, year = {1942}, pages = { 693-705}, language = {en}, url = {http://dml.mathdoc.fr/item/1077493511} }
Reves, George E.; Szász, Otto. Some theorems on double trigonometric series. Duke Math. J., Tome 9 (1942) no. 1, pp. 693-705. http://gdmltest.u-ga.fr/item/1077493511/