@InProceedings{zeisl2009bmvc,
  author = 	 {Zeisl, B., Georgel, P., Schweiger, F., Steinbach, E., Navab, N.},
  title = 	 {Estimation of Location Uncertainty for Scale Invariant Feature Points},
  booktitle = {British Machine Vision Conference (BMVC)},
  year = {2009}
}