@article{GDZPPN002402874,
title = {Density of Finite Simple Group Orders.},
journal = {Mathematische Zeitschrift},
volume = {105},
year = {1968},
pages = {175-177},
zbl = {0159.31103},
url = {http://dml.mathdoc.fr/item/GDZPPN002402874}
}
Dornhoff, L.; Spitznagel, E.L. Density of Finite Simple Group Orders.. Mathematische Zeitschrift, Tome 105 (1968) pp. 175-177. http://gdmltest.u-ga.fr/item/GDZPPN002402874/