@article{JRAM_1925__154_149554,
     author = {Heinrich Liebmann},
     title = {Zur {Geometrie} der {Laguerre-Gruppe.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {15--19},
     year = {1925},
     volume = {154},
     zbl = {50.0459.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1925__154_149554/}
}