Orrù, E. (2017). The Schengen Information System and Data Retention. On Surveillance,
Security and Legitimacy in the European Union. In E. Orrù, M. G. Porcedda, & S. Weydner-Volkmann (Eds.),
Rethinking Surveillance and Control. Beyond the 'Security vs. Privacy' Debate (pp. 115-136).
Baden-Baden: Nomos.