@article{GDZPPN002420546,
title = {Endliche Pr\"a-Hjelmslev-Gruppen.},
journal = {Mathematische Zeitschrift},
volume = {162},
year = {1978},
pages = {215-234},
zbl = {0358.20022},
url = {http://dml.mathdoc.fr/item/GDZPPN002420546}
}
Salow, Edzard. Endliche Prä-Hjelmslev-Gruppen.. Mathematische Zeitschrift, Tome 162 (1978) pp. 215-234. http://gdmltest.u-ga.fr/item/GDZPPN002420546/