@book{10773,
	author = {Lipschutz, Seymour. and Lipson, Marc Lars.},
	title = {Schaum's outline of theory and problems of discrete mathematics /},
	publisher = {Tata McGraw-Hill,},
	year = {c1997.},
	address = {New Delhi :},
	edition = {2nd ed.},
	note = {Includes index.}
}