@article{AM2_1985__28_137067,
     author = {Z. Dar\'oczy and I. K\'atai},
     title = {On additive number-theoretical functions with values in a compact {Abelian} group.},
     journal = {Aequationes mathematicae},
     pages = {288--292},
     publisher = {mathdoc},
     volume = {28},
     year = {1985},
     zbl = {0568.10022},
     url = {http://geodesic.mathdoc.fr/item/AM2_1985__28_137067/}
}