@book{507,
	author = {Maddock, R J.},
	title = {Poles and Zeros in Electrical and Control Engineering /},
	publisher = {Holt, R & W,},
	year = {1982.},
	address = {[S.l.] :},
	note = {Import.},
	url = {http://10.10.170.122:8080/browse/book/28204}
}