@book{53295,
	author = {De Freitas, Jolyon M. and ebrary, Inc.},
	title = {Digital filter design solutions},
	publisher = {Artech House,},
	year = {c2005.},
	series = {Artech House microwave library},
	address = {Boston :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10091342}
}