@book{1663,
	author = {Graham, Ronald L. and Knuth, Donald E.},
	title = {Concrete mathematics a foundation for computer science /},
	publisher = {Pearson,},
	year = {c2000.},
	address = {New York:},
	edition = {2nd ed.},
	note = {Includes bibliography (p. 604-631) and index.}
}