@article{1178243181,
author = {Saeki, Sadahiro},
title = {An elementary proof of a theorem of Henry Helson},
journal = {Tohoku Math. J. (2)},
volume = {20},
number = {4},
year = {1968},
pages = { 244-247},
language = {en},
url = {http://dml.mathdoc.fr/item/1178243181}
}
Saeki, Sadahiro. An elementary proof of a theorem of Henry Helson. Tohoku Math. J. (2), Tome 20 (1968) no. 4, pp. 244-247. http://gdmltest.u-ga.fr/item/1178243181/