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@article{IM2_1967_1_2_a12, author = {A. F. Lavrik}, title = {On functional equations of {Dirichlet} functions}, journal = {Izvestiya. Mathematics }, pages = {421--432}, publisher = {mathdoc}, volume = {1}, number = {2}, year = {1967}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM2_1967_1_2_a12/} }
A. F. Lavrik. On functional equations of Dirichlet functions. Izvestiya. Mathematics , Tome 1 (1967) no. 2, pp. 421-432. http://geodesic.mathdoc.fr/item/IM2_1967_1_2_a12/