@article{GDZPPN002401193,
title = {Counting Finite Groups of Given Order.},
journal = {Mathematische Zeitschrift},
volume = {99},
year = {1967},
pages = {236-237},
zbl = {0189.02304},
url = {http://dml.mathdoc.fr/item/GDZPPN002401193}
}
Gallagher, Patrick X. Counting Finite Groups of Given Order.. Mathematische Zeitschrift, Tome 99 (1967) pp. 236-237. http://gdmltest.u-ga.fr/item/GDZPPN002401193/