@article{JRAM_1978__297_151955,
     author = {Eugen Peter Bauhoff},
     title = {Zykloide {Nichtkongruenzuntergruppen} in den {Heckeschen} {Gruppen} {G} (...d).},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {172--176},
     publisher = {mathdoc},
     volume = {297},
     year = {1978},
     zbl = {0362.10023},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1978__297_151955/}
}