@article{1077473103, author = {Chang, Su-Cheng}, title = {A generalization of the sextactic point of a plane curve}, journal = {Duke Math. J.}, volume = {12}, number = {1}, year = {1945}, pages = { 275-278}, language = {en}, url = {http://dml.mathdoc.fr/item/1077473103} }
Chang, Su-Cheng. A generalization of the sextactic point of a plane curve. Duke Math. J., Tome 12 (1945) no. 1, pp. 275-278. http://gdmltest.u-ga.fr/item/1077473103/