@article{1102948688, author = {Ryden, Roy W.}, title = {Groups of arithmetic functions under Dirichlet convolution.}, journal = {Pacific J. Math.}, volume = {49}, number = {2}, year = {1973}, pages = { 355-360}, language = {en}, url = {http://dml.mathdoc.fr/item/1102948688} }
Ryden, Roy W. Groups of arithmetic functions under Dirichlet convolution.. Pacific J. Math., Tome 49 (1973) no. 2, pp. 355-360. http://gdmltest.u-ga.fr/item/1102948688/