@book{3483,
	author = {Lipschutz, Seymour.  and Lipson, Marc Lars. },
	title = {Theory and problems of discrete mathematics /},
	publisher = {McGraw-Hill,},
	year = {c1997.},
	series = {Schaum's outline series.},
	address = {New York :},
	edition = {2nd ed.},
	note = {Includes index.}
}