E. E. Demekhin, A. M. Raigorodskii, O. I. Rubanov, “Distance graphs having large chromatic numbers and containing no cliques or cycles of a given size”, Mat. Sb., 204:4 (2013), 49–78; Sb. Math., 204:4 (2013), 508–538
2010
2.
A. M. Raigorodskii, O. I. Rubanov, “Distance Graphs with Large Chromatic Number and without Large Cliques”, Mat. Zametki, 87:3 (2010), 417–428; Math. Notes, 87:3 (2010), 392–402
2007
3.
O. I. Rubanov, “Chromatic Numbers of 3-Dimensional Distance Graphs Containing No Tetrahedra”, Mat. Zametki, 82:5 (2007), 797–800; Math. Notes, 82:5 (2007), 718–721