@article{GDZPPN002474174,
title = {A Global Formulation of the Condition for a Curve to Lie in a Sphere.},
journal = {Monatshefte f\"ur Mathematik},
volume = {67},
year = {1963},
pages = {363-365},
zbl = {0144.20404},
url = {http://dml.mathdoc.fr/item/GDZPPN002474174}
}
Wong, Yung-Chow. A Global Formulation of the Condition for a Curve to Lie in a Sphere.. Monatshefte für Mathematik, Tome 67 (1963) pp. 363-365. http://gdmltest.u-ga.fr/item/GDZPPN002474174/