@article{GDZPPN002207273,
title = {Double recurrence and almost sure convergence.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {405},
year = {1990},
pages = {140-161},
zbl = {0685.28008},
url = {http://dml.mathdoc.fr/item/GDZPPN002207273}
}
Bourgain, J. Double recurrence and almost sure convergence.. Journal für die reine und angewandte Mathematik, Tome 405 (1990) pp. 140-161. http://gdmltest.u-ga.fr/item/GDZPPN002207273/