@article{1077466270,
author = {Berkovitz, Leonard D. and Gosselin, Richard P.},
title = {Restricted summation and localization of double trigonometric
series},
journal = {Duke Math. J.},
volume = {22},
number = {1},
year = {1955},
pages = { 243-251},
language = {en},
url = {http://dml.mathdoc.fr/item/1077466270}
}
Berkovitz, Leonard D.; Gosselin, Richard P. Restricted summation and localization of double trigonometric
series. Duke Math. J., Tome 22 (1955) no. 1, pp. 243-251. http://gdmltest.u-ga.fr/item/1077466270/