@article{MZ_1921__11_167664,
     author = {G. Scheffers},
     title = {Ebene {Ber\"uhrungskurven} zweier {Rotationsfl\"achen.}},
     journal = {Mathematische Zeitschrift},
     pages = {315--316},
     publisher = {mathdoc},
     volume = {11},
     year = {1921},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1921__11_167664/}
}