@CONFERENCE{Spiess2008,
  author = {Patrik Spieß and Dinh Khoa Nguyen and Ingo Weber and Ivan Markovic
	and Michael Beigl},
  title = {Modelling, Simulation, and Performance Analysis of Business Processes
	Involving Ubiquitous Systems},
  booktitle = {20th International Conference on Advanced Information Systems Engineering
	(CAiSE'08), June 16-20, 2008},
  year = {2008},
  ibrauthors = {beigl},
  ibrgroups = {dus},
  url = {http://www.ibr.cs.tu-bs.de/dus/publications/Caise08.pdf}
}