@article{MOMA_1972__76_177622,
     author = {J\"urgen T\"olke},
     title = {Fl\"achenl\"aufige sph\"arische {Drehvorg\"ange.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {455--465},
     publisher = {mathdoc},
     volume = {76},
     year = {1972},
     zbl = {0259.70001},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1972__76_177622/}
}