@book{5293,
	author = {Lipschutz, Seymour. and Lipson, Marc.},
	title = {Discrete mathematics /},
	publisher = {McGraw-Hill ;},
	year = {c1997.[Reprinted 2008, 2006]},
	series = {Schaum’s outline series},
	address = {New York :},
	edition = {2nd ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/bios/mh041/97019341.html}
}