Edelsbrunner H, Welzl E. 1983. On the number of equal-sized semispaces of a set of points in the plane. International Colloquium on Automata, Languages, and Programming. ICALP: Automata, Languages and ProgrammingLNCS, LNCS, vol. 154, 182–187.
LibreCat: https://research-explorer.ista.ac.at/record/4124
DOI: 10.1007/BFb0036908