@article{GDZPPN00238969X,
title = {Arithmetical functions associated with the unitary divisors of an integer.},
journal = {Mathematische Zeitschrift},
volume = {73},
year = {1960},
pages = {66-80},
zbl = {0094.02601},
url = {http://dml.mathdoc.fr/item/GDZPPN00238969X}
}
Cohen, Eckford. Arithmetical functions associated with the unitary divisors of an integer.. Mathematische Zeitschrift, Tome 73 (1960) pp. 66-80. http://gdmltest.u-ga.fr/item/GDZPPN00238969X/