@article{CMH_1948__21_138938,
     author = {Hans Zassenhaus},
     title = {\"Uber einen {Algorithmus} zur {Bestimmung} der {Raumgruppen.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {117--141},
     publisher = {mathdoc},
     volume = {21},
     year = {1948},
     zbl = {0030.00902},
     url = {http://geodesic.mathdoc.fr/item/CMH_1948__21_138938/}
}