@inbook{SHGRMW07, address = {New York, USA}, author = {Stiller, Burkhard and Hausheer, David and Gerke, Jan and Racz, Peter and Morariu, Cristian and Waldburger, Martin}, booktitle = {Ubiquitous Computing Technology for Real Time Enterprises}, howpublished = {Max Mühlhäuser, Iryna Gurevych (Eds.), ISBN 978-1-59904-832-1}, month = {dec}, pages = {302-336}, publisher = {Information Science Reference}, title = {Accounting and Charging - Guarantees and Contracts}, year = {2007} }