@book{47493,
	author = {Walker, John L. B.},
	title = {Classic works in RF engineering /},
	publisher = {Artech House,},
	year = {c2006-c2007},
	series = {Artech House microwave library},
	address = {Boston :},
	url = {http://www.loc.gov/catdir/toc/fy0704/2005058853.html}
}