@article{GDZPPN002388391,
title = {A strengthened form of a theorem of Wiener.},
journal = {Mathematische Zeitschrift},
volume = {71},
year = {1959},
pages = {31-35},
zbl = {0163.07902},
url = {http://dml.mathdoc.fr/item/GDZPPN002388391}
}
Petersen, G.M.; Keogh, F.R. A strengthened form of a theorem of Wiener.. Mathematische Zeitschrift, Tome 71 (1959) pp. 31-35. http://gdmltest.u-ga.fr/item/GDZPPN002388391/