@article{MOMA_1962__66_177166,
     author = {Frank L\"obell},
     title = {Bemerkungen zu einer {Beltrami-Bonnetschen} {Beziehung.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {215--218},
     publisher = {mathdoc},
     volume = {66},
     year = {1962},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1962__66_177166/}
}