@inbook{publication-3718,
	address={Hershey},
	author={Stiller, Burkhard and Hausheer, David and Gerke, Jan and Racz, Peter and Morariu, Cristian and Waldburger, Martin},
	booktitle={Handbook of Ubiquitous Computing Technology for Real Time Enterprises},
	doi={10.4018/978-1-59904-832-1.ch014},
	editor={M{\"u}hlh{\"a}user, Max and Gurevych, Iryna},
	isbn={978-1-59904-832-1},
	pages={302-336},
	publisher={Information Science Reference},
	title={Accounting and charging - Guarantees and contracts},
	year=2007,
}