@article{BAG_1990__30_138458,
     author = {E. Moln\'ar},
     title = {Eine {Klasse} von hyperbolischen {Raumgruppen}},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {79--100},
     publisher = {mathdoc},
     volume = {30},
     year = {1990},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/BAG_1990__30_138458/}
}