@article{GDZPPN00036505X, title = {On a Generalization of the Gallai-Sylvester Theorem.}, journal = {Discrete \& computational geometry}, volume = {7}, year = {1992}, pages = {87-104}, zbl = {0765.51002}, url = {http://dml.mathdoc.fr/item/GDZPPN00036505X} }
Kupitz, Y.S. On a Generalization of the Gallai-Sylvester Theorem.. Discrete & computational geometry, Tome 7 (1992) pp. 87-104. http://gdmltest.u-ga.fr/item/GDZPPN00036505X/