@article{1183511459, author = {Grove, V. G.}, title = {On the Darboux tangents}, journal = {Bull. Amer. Math. Soc.}, volume = {53}, number = {12}, year = {1947}, pages = { 1186-1191}, language = {en}, url = {http://dml.mathdoc.fr/item/1183511459} }
Grove, V. G. On the Darboux tangents. Bull. Amer. Math. Soc., Tome 53 (1947) no. 12, pp. 1186-1191. http://gdmltest.u-ga.fr/item/1183511459/