@article{JRAM_1971__246_151078,
     author = {E.M. Horadam},
     title = {An extension of {Daykin's} generalized {M\"obius} function to unitary divisors.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {117--125},
     publisher = {mathdoc},
     volume = {246},
     year = {1971},
     zbl = {0209.35303},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1971__246_151078/}
}