@phdthesis{DissWa1,
	address = {Zurich, Switzerland},
	author = {Waldburger, Martin},
	organization = {Communication Systems Group, Department of Informatics},
	institution = {Universität Zürich},
	month = {apr},
	title = {Decision Support in Contract Formation for Commercial Electronic Services with International Connection},
	url = {http://www.csg.uzh.ch/staff/alumni/waldburger/extern/publications/Dissertation-Martin-Waldburger.pdf},
	year = {2011}
}