@book{31414,
	author = {Parks, T. W. and Burrus, C. S.},
	title = {Digital filter design /},
	publisher = {Wiley,},
	year = {c1987.},
	address = {New York :},
	note = {"A Wiley-Interscience publication."},
	url = {http://www.loc.gov/catdir/description/wiley033/86032500.html}
}