@book{57713,
	author = {Stranneby, Dag. and  Walker, William},
	title = {Digital signal processing :},
	publisher = {Wlsevier,},
	year = {2004},
	address = {Amsterdam :},
	edition = {Second edition},
	url = {http://www.loc.gov/catdir/description/els031/2001277032.html}
}