@book{188686,
	author = {Haykin, Simon S.,},
	title = {Communication systems /},
	publisher = {Wiley,},
	year = {c1994.},
	address = {New York :},
	edition = {3rd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0607/93047663-d.html}
}