@article{GDZPPN00218687X,
title = {Arithmetical properties of finite rings and algebras, and analytic number theory. II.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {253},
year = {1972},
pages = {74-99},
zbl = {0246.10033},
url = {http://dml.mathdoc.fr/item/GDZPPN00218687X}
}
Knopfmacher, John. Arithmetical properties of finite rings and algebras, and analytic number theory. II.. Journal für die reine und angewandte Mathematik, Tome 253 (1972) pp. 74-99. http://gdmltest.u-ga.fr/item/GDZPPN00218687X/