@INPROCEEDINGS{kluckner09c,
  author = {Stefan Kluckner and Thomas Mauthner and Horst Bischof},
  title = {A Covariance Approximation on Euclidean Space for Visual Tracking},
  booktitle = {Proc. Workshop of the Austrian Association for Pattern Recognition (AAPR/OAGM)},
  year = {2009}
}