@article{1103034171,
author = {Apostol, Tom M. and Zuckerman, Herbert S.},
title = {On the functional equation $F(mn)F((m,\,n))=F(m)F(n)f((m,\,n))$.},
journal = {Pacific J. Math.},
volume = {14},
number = {4},
year = {1964},
pages = { 377-384},
language = {en},
url = {http://dml.mathdoc.fr/item/1103034171}
}
Apostol, Tom M.; Zuckerman, Herbert S. On the functional equation $F(mn)F((m,\,n))=F(m)F(n)f((m,\,n))$.. Pacific J. Math., Tome 14 (1964) no. 4, pp. 377-384. http://gdmltest.u-ga.fr/item/1103034171/