@inbook{WaSt21,
	address = {Heidelberg, Germany},
	author = {Waldburger, Martin and Stiller, Burkhard},
	booktitle = {Telecommunication Economics},
	howpublished = {Lecture Notes in Computer Science (LNCS), Vol. 7216},
	month = {feb},
	pages = {167-178},
	publisher = {Springer, ISBN 978-3-642-30381-4},
	title = {Decision Support in Contract Formation for Commercial Electronic Services with International Connection},
	year = {2012}
}