A new Sylvester-Gallai configuration representing the 13-point projective plane in ::::R:::::::4:::

Jürgen Bokowski, Jürgen Richter-Gebert. A new Sylvester-Gallai configuration representing the 13-point projective plane in ::::R:::::::4:::. Journal of Combinatorial Theory, Series A, 54(1):161-165, 1992. [doi]

Abstract

Abstract is missing.