Raising User Awareness about Privacy Threats in Participatory Sensing Applications through Graphical Warnings. - Delphine Christin; Martin Michalak; Matthias Hollick (MoMM, 2013)

Job Alerts in the Wild: Study of Expectations and Effects of Location-based Notifications in an Existing Mobile Crowdsourcing Application. - Delphine Reinhardt; Martin Michalak; Robert Lokaiczyk (MobiQuitous, 2016)