@INPROCEEDINGS{possegger13a,
  author = {Horst Possegger and Sabine Sternig and Thomas Mauthner and Peter M. Roth and Horst Bischof},
  title = {Robust Real-Time Tracking of Multiple Objects by Volumetric Mass Densities},
  booktitle = {Proc. IEEE Conference on Computer Vision and Pattern Recognition (CVPR)},
  year = {2013}
}