@article{2469, author = {Horadam, E.M.}, title = {Unitary divisor functions of a generalised integer}, journal = {Portugaliae mathematica}, volume = {24}, year = {1965}, pages = {131-143}, zbl = {0161.04601}, mrnumber = {0218317}, language = {en}, url = {http://dml.mathdoc.fr/item/2469} }
Horadam, E.M. Unitary divisor functions of a generalised integer. Portugaliae mathematica, Tome 24 (1965) pp. 131-143. http://gdmltest.u-ga.fr/item/2469/