uSafe: A privacy-aware and participative mobile application for citizen safety in urban environments. - Delphine Christin; Christian Roßkopf; Matthias Hollick (Pervasive Mob. Comput., 2013)

IncogniSense: An anonymity-preserving reputation framework for participatory sensing applications. - Delphine Christin; Christian Roßkopf; Matthias Hollick; Leonardo A. Martucci; Salil S. Kanhere (Pervasive Mob. Comput., 2013)