@article{MOMA_1948__52_176787,
     author = {Hans Robert M\"uller},
     title = {Der {Drall} einer {Regelfl\"ache} im elliptischen {Raum.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {181--188},
     publisher = {mathdoc},
     volume = {52},
     year = {1948},
     zbl = {0030.26803},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1948__52_176787/}
}