@book{32594,
	author = {Chartrand, Gary. and Zhang, Ping,},
	title = {Chromatic graph theory /},
	publisher = {Chapman & Hall/CRC,},
	year = {2009.},
	series = {Discrete mathematics and its applications},
	address = {Boca Raton :},
	url = {http://www.loc.gov/catdir/toc/fy0903/2008044200.html}
}