@book{CMSt11,
	address = {Heidelberg, Germany},
	author = {Cohen, Johanne and Maille, Patrick and Stiller, Burkhard},
	isbn = {978-3-642-24547-3},
	month = {oct},
	publisher = {Springer},
	title = {7th Workshop on "Internet Charging and QoS Technologies"},
	url = {http://www.springer.com/computer/swe/book/978-3-642-24547-3},
	volume = {6995},
	year = {2011}
}