@book{6499,
	author = {BISWAL, PURNA CHANDRA },
	title = {Discrete mathematics and graph theory},
	publisher = {PHI Learning Private Limited,},
	year = {2013.},
	address = {[S.l.] :},
	edition = {THIRD EDITION.},
	note = {Kindle eBook.},
	url = {http://www.amazon.com/exec/obidos/ASIN/B00E19917O/chop}
}