@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/