@article{1077474676,
author = {Bellman, Richard and Shapiro, Harold N.},
title = {The algebraic independence of arithmetic functions (I)
Multiplicative functions},
journal = {Duke Math. J.},
volume = {15},
number = {1},
year = {1948},
pages = { 229-235},
language = {en},
url = {http://dml.mathdoc.fr/item/1077474676}
}
Bellman, Richard; Shapiro, Harold N. The algebraic independence of arithmetic functions (I)
Multiplicative functions. Duke Math. J., Tome 15 (1948) no. 1, pp. 229-235. http://gdmltest.u-ga.fr/item/1077474676/