@article{01370376,
title = {Rational arithmetical functions of order (2,1) with respect to regular convolutions.},
journal = {Portugaliae Mathematica. Nova S\'erie},
volume = {56},
year = {1999},
pages = {329-343},
zbl = {0939.11003},
language = {en},
url = {http://dml.mathdoc.fr/item/01370376}
}
Haukkanen, P. Rational arithmetical functions of order (2,1) with respect to regular convolutions.. Portugaliae Mathematica. Nova Série, Tome 56 (1999) pp. 329-343. http://gdmltest.u-ga.fr/item/01370376/