@book{72689,
	author = {Ayers, John E.},
	title = {Digital integrated circuits :},
	publisher = {CRC Press,},
	year = {2010.},
	address = {Boca Raton :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0906/2009010227-d.html}
}