@article{MOMA_1975__80_177706,
     author = {Josef Krames},
     title = {\"Uber {Drehzykliden} vierter {Ordnung.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {45--60},
     publisher = {mathdoc},
     volume = {80},
     year = {1975},
     zbl = {0306.50007},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1975__80_177706/}
}