@book{6500,
	author = {Iyengar, S N.},
	title = {Discrete mathematics /},
	publisher = {Vikas Publication House Pvt Ltd,},
	year = {2003.},
	address = {[S.l.] :},
	note = {Import.},
	url = {http://www.amazon.com/exec/obidos/ASIN/8125913629/chopaconline-20}
}