@article{GDZPPN002273063, title = {Spheres Osculating a Curve and Quasiosculating Another Curve}, journal = {Mathematische Annalen}, volume = {101}, year = {1929}, pages = {147-160}, zbl = {55.0395.04}, url = {http://dml.mathdoc.fr/item/GDZPPN002273063} }
Ranum, A. Spheres Osculating a Curve and Quasiosculating Another Curve. Mathematische Annalen, Tome 101 (1929) pp. 147-160. http://gdmltest.u-ga.fr/item/GDZPPN002273063/