@book{5120,
	author = {Frenzel, Louis E},
	title = {Communication Electronics: Principles and applications},
	publisher = {Career Education,},
	year = {2001.},
	address = {[S.l.] :},
	edition = {3rd ed.},
	url = {http://10.10.170.122:8080/browse/book/26500}
}