@article{GDZPPN00204014X,
title = {On products of additive functions (a third approach).},
journal = {Aequationes mathematicae},
volume = {45},
year = {1993},
pages = {281-284},
zbl = {0777.12001},
url = {http://dml.mathdoc.fr/item/GDZPPN00204014X}
}
Halter-Koch, Franz. On products of additive functions (a third approach).. Aequationes mathematicae, Tome 45 (1993) pp. 281-284. http://gdmltest.u-ga.fr/item/GDZPPN00204014X/