@inproceedings{huberma2007ismarUbitrack,
  author    = {Huber, Manuel and Pustka, Daniel and Keitler, Peter and Echtler. Florian and Klinker, Gudrun},
  title     = {{A System Architecture for Ubiquitous Tracking Environments}},
  booktitle =    {{Proceedings of the 6th International Symposium on Mixed and Augmented Reality (ISMAR)}},
  month     = nov,
  year      = 2007
}