@book{3653,
	author = {Roberts, Michael J},
	title = {Signals and systems :},
	publisher = {McGraw-Hill ;},
	year = {c2004 [reprinted 2005].},
	address = {Dubuque, Iowa :},
	url = {http://www.loc.gov/catdir/enhancements/fy0702/2003046424-d.html}
}