@article{MAN_1929__101_159324,
     author = {A. Ranum},
     title = {Spheres {Osculating} a {Curve} and {Quasiosculating} {Another} {Curve}},
     journal = {Mathematische Annalen},
     pages = {147--160},
     publisher = {mathdoc},
     volume = {101},
     year = {1929},
     zbl = {55.0395.04},
     url = {http://geodesic.mathdoc.fr/item/MAN_1929__101_159324/}
}