@book{175813,
	author = {Barry, John R., and Lee, Edward A.,},
	title = {Digital communication /},
	publisher = {Kluwer Academic Publishers,},
	year = {c2004.},
	address = {Boston :},
	edition = {3rd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0820/2003054667-d.html}
}