@article{MOMA_1959__63_177064,
     author = {Hans Robert M\"uller},
     title = {Zur {Ermittlung} von {H\"ullfl\"achen} in der r\"aumlichen {Kinematik.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {231--240},
     publisher = {mathdoc},
     volume = {63},
     year = {1959},
     zbl = {0089.17001},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1959__63_177064/}
}