@article{1250125848,
author = {Hawkes, T. and Isaacs, I.M. and \"Ozaydin, M.},
title = {On the M\"obius function of a finite group},
journal = {Rocky Mountain J. Math.},
volume = {19},
number = {4},
year = {1989},
pages = { 1003-1034},
language = {en},
url = {http://dml.mathdoc.fr/item/1250125848}
}
Hawkes, T.; Isaacs, I.M.; Özaydin, M. On the Möbius function of a finite group. Rocky Mountain J. Math., Tome 19 (1989) no. 4, pp. 1003-1034. http://gdmltest.u-ga.fr/item/1250125848/