@INPROCEEDINGS{blum2009ismar,
  author = {Tobias Blum and Sandro Michael Heining and Oliver Kutter and Nassir Navab},
  title = {Advanced Training Methods using an Augmented Reality Ultrasound Simulator},
  booktitle = {8th IEEE and ACM International Symposium on Mixed and Augmented Reality (ISMAR 2009)},
  year = {2009},
  address =	 {Orlando, USA},
  pages = {177-178},
  month =	 {October}
}