The following publications are possibly variants of this publication:
- On Rainbow Quadrilaterals in Colored Point SetsA. Arévalo, R. Chávez-Jiménez, A. Hernández-Mora, R. López-López, Nestaly Marín, Adriana Ramírez-Vigueras, Oriol Andreu Solé-Pi, Jorge Urrutia. gc, 38(5):152, 2022. [doi]
- Empty monochromatic trianglesOswin Aichholzer, Ruy Fabila Monroy, David Flores-Peñaloza, Thomas Hackl, Clemens Huemer, Jorge Urrutia. comgeo, 42(9):934-938, 2009. [doi]
- Empty Monochromatic TrianglesOswin Aichholzer, Ruy Fabila Monroy, David Flores-Peñaloza, Thomas Hackl, Clemens Huemer, Jorge Urrutia. cccg 2008:
- Covering the Convex Quadrilaterals of Point SetsToshinori Sakai, Jorge Urrutia. gc, 23(Supplement-1):343-357, 2007. [doi]