@article{1183419191, author = {Ames, L. D.}, title = {Note on the orientation of a secant}, journal = {Bull. Amer. Math. Soc.}, volume = {14}, number = {3}, year = {1907}, pages = { 240-241}, language = {en}, url = {http://dml.mathdoc.fr/item/1183419191} }
Ames, L. D. Note on the orientation of a secant. Bull. Amer. Math. Soc., Tome 14 (1907) no. 3, pp. 240-241. http://gdmltest.u-ga.fr/item/1183419191/