@book{11135,
	author = {Tocci, Ronald J. and Widmer, Neal S.},
	title = {Digital systems :},
	publisher = {Pearson Prentice Hall,},
	year = {c2007},
	address = {Upper Saddle River, NJ :},
	edition = {10th ed.},
	url = {http://www.loc.gov/catdir/toc/ecip064/2005035835.html}
}