@article{GDZPPN002439751,
title = {Two elementary proofs of Hal\'asz's theorem.},
journal = {Mathematische Zeitschrift},
volume = {209},
year = {1992},
pages = {43-52},
zbl = {0724.11045},
url = {http://dml.mathdoc.fr/item/GDZPPN002439751}
}
Indlekofer, Karl-Heinz; Daboussi, Hédi. Two elementary proofs of Halász's theorem.. Mathematische Zeitschrift, Tome 209 (1992) pp. 43-52. http://gdmltest.u-ga.fr/item/GDZPPN002439751/