@CONFERENCE{Krohn2004,
  author = {Albert Krohn and Tobias Zimmer and Michael Beigl},
  title = {Enhancing Tabletop Games with Relative Positioning Technology},
  booktitle = {Proceedings of the Workshop on Gaming Applications in Pervasive Computing
	Environments at the 2nd International Conference on Pervasive Computing
	(Pervasive)},
  year = {2004},
  ibrauthors = {beigl},
  ibrgroups = {dus},
  url = {http://www.teco.edu/%7Ekrohn/tabletop.pdf}
}