@book{251212,
	author = {Mandal, Ajit K. and ebrary, Inc.},
	title = {Introduction to control engineering},
	publisher = {New Age International (P) Ltd., Publishers,},
	year = {2006.},
	address = {New Delhi :},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10323378}
}