@article{JRAM_1931__164_149750,
     author = {Frank L\"obell},
     title = {Gewindeb\"uschel und ihre {Invarianten.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {64--66},
     publisher = {mathdoc},
     volume = {164},
     year = {1931},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1931__164_149750/}
}