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@article{MS2_1976__38_166471, author = {Gunnar Dirdal}, title = {Congruence properties for a class of arithmetical functions.}, journal = {Mathematica Scandinavica}, pages = {247--261}, publisher = {mathdoc}, volume = {38}, year = {1976}, zbl = {0337.10002}, url = {http://geodesic.mathdoc.fr/item/MS2_1976__38_166471/} }
Gunnar Dirdal. Congruence properties for a class of arithmetical functions.. Mathematica Scandinavica, Tome 38 (1976), pp. 247-261. http://geodesic.mathdoc.fr/item/MS2_1976__38_166471/