@article{JRAM_1981__323_152339,
     author = {Bernhard Liehl},
     title = {On the group {S} {L} 2 over orders of arithmetic type.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {153--171},
     publisher = {mathdoc},
     volume = {323},
     year = {1981},
     zbl = {0447.20035},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1981__323_152339/}
}