@book{202,
	author = {Graham, Ronald L. and Knuth, Donald E. Patashnik, Oren.},
	title = {Concrete mathematics :},
	publisher = {Addison-Wesley Professional,},
	year = {1994},
	series = {2nd edition.},
	address = {[S.l.] :},
	edition = {2nd ed.},
	note = {Hardcover.}
}