Nearly equal distances and Szemerédi's regularity lemma.

János Pach Rados Radoicic Jan Vondrák Nearly equal distances and Szemerédi's regularity lemma. 11-19 2006 34 Comput. Geom. 1 http://dx.doi.org/10.1016/j.comgeo.2005.06.002 db/journals/comgeo/comgeo34.html#PachRV06