The following publications are possibly variants of this publication:
- Every Large Point Set contains Many Collinear Points or an Empty PentagonZachary Abel, Brad Ballinger, Prosenjit Bose, Sébastien Collette, Vida Dujmovic, Ferran Hurtado, Scott Duke Kominers, Stefan Langerman, Attila Pór, David R. Wood. gc, 27(1):47-60, 2011. [doi]
- Every Large Point Set contains Many Collinear Points or an Empty PentagonZachary Abel, Brad Ballinger, Prosenjit Bose, Sébastien Collette, Vida Dujmovic, Ferran Hurtado, Scott D. Kominers, Stefan Langerman, Attila Pór, David R. Wood. cccg 2009: 99-102 [doi]
- On empty pentagons and hexagons in planar point setsPavel Valtr. cats 2012: 47-48 [doi]
- On planar point sets with the pentagon propertyJosef Cibulka, Jan Kyncl, Pavel Valtr. compgeom 2013: 81-90 [doi]