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@article{PIM_1987_N_S_41_55_a3, author = {Aleksandar Ivi\'c}, title = {Sums of {Products} of {Certain} {Arthmetical} {Functions}}, journal = {Publications de l'Institut Math\'ematique}, pages = {31 }, publisher = {mathdoc}, volume = {_N_S_41}, number = {55}, year = {1987}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PIM_1987_N_S_41_55_a3/} }
Aleksandar Ivić. Sums of Products of Certain Arthmetical Functions. Publications de l'Institut Mathématique, _N_S_41 (1987) no. 55, p. 31 . http://geodesic.mathdoc.fr/item/PIM_1987_N_S_41_55_a3/