@inproceedings{bertolaja2013gonio,
  title={Gonio, Aequus and Incognitus: three spatial granularities for privacy-aware systems},
  author={Bertolaja, Letizia and Ahmetovic, Dragan and Mascetti, Sergio},
  booktitle={International Conference on Mobile Data Management Workshops (MDM)},
  year={2013},
  isbn={978-0-7695-4973-6},
  organization={IEEE}
}