@book{6029,
	author = {Tocci, Ronald J. and Widmer, Neal S.},
	title = {Digital Systems: principles and applications },
	publisher = {Prentice Hall,},
	year = {1998. },
	address = {[S.l.] :},
	edition = {7th ed. },
	url = {http://10.10.170.122:8080/browse/book/2558}
}