Oswin Aichholzer, Thomas Hackl, Pavel Valtr, Birgit Vogtenhuber. A Note on the Number of General 4-holes in (Perturbed) Grids. In Jin Akiyama, Hiro Ito, Toshinori Sakai, editors, Discrete and Computational Geometry and Graphs - 18th Japan Conference, JCDCGG 2015, Kyoto, Japan, September 14-16, 2015, Revised Selected Papers. Volume 9943 of Lecture Notes in Computer Science, pages 1-12, Springer, 2015. [doi]
Abstract is missing.