An upper bound for the chromatic number of line graphs.

Andrew D. King Bruce A. Reed Adrian Vetta An upper bound for the chromatic number of line graphs. 2182-2187 2007 28 Eur. J. Comb. 8 http://dx.doi.org/10.1016/j.ejc.2007.04.014 db/journals/ejc/ejc28.html#KingRV07