@book{40953,
	author = {Tschofenig, Hannes. and ebrary, Inc.},
	title = {Internet protocol-based emergency services},
	publisher = {John Wiley & Sons Inc.,},
	year = {2013.},
	address = {Chichester, West Sussex :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10716685}
}