@book{55173,
	author = {Johnston, Alan B. and ebrary, Inc.},
	title = {SIP},
	publisher = {Artech House,},
	year = {c2004.},
	series = {Artech House telecommunications library},
	address = {Boston :},
	edition = {2nd ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10082016}
}