@book{157758,
	author = {Camarillo, Gonzalo. and García-Martín, Miguel A. and ebrary, Inc.},
	title = {The 3G IP multimedia subsystem (IMS)},
	publisher = {Wiley,},
	year = {2004.},
	address = {Chichester :},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10114057}
}