@article{GDZPPN000365793, title = {There Exist 6n/13 Ordinary Points.}, journal = {Discrete \& computational geometry}, volume = {10}, year = {1993}, pages = {187-202}, zbl = {0771.52003}, url = {http://dml.mathdoc.fr/item/GDZPPN000365793} }
Csima, J.; Sawyer, E.T. There Exist 6n/13 Ordinary Points.. Discrete & computational geometry, Tome 10 (1993) pp. 187-202. http://gdmltest.u-ga.fr/item/GDZPPN000365793/