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@article{MZ_1992__209_2_174348, author = {Karl-Heinz Indlekofer and H\'edi Daboussi}, title = {Two elementary proofs of {Hal\'asz's} theorem.}, journal = {Mathematische Zeitschrift}, pages = {43--52}, publisher = {mathdoc}, volume = {209}, number = {2}, year = {1992}, zbl = {0724.11045}, url = {http://geodesic.mathdoc.fr/item/MZ_1992__209_2_174348/} }
Karl-Heinz Indlekofer; Hédi Daboussi. Two elementary proofs of Halász's theorem.. Mathematische Zeitschrift, Tome 209 (1992) no. 2, pp. 43-52. http://geodesic.mathdoc.fr/item/MZ_1992__209_2_174348/