1. ICAO, Doc 9944, Guidelines on Passenger Name Record (PNR) data of 2010 (ICAO PNR Guidelines 2010).
2. Council Framework Decision 2008/977/JHA of 27 November 2008 on the protection of personal data processed in the framework of police and judicial cooperation in criminal matters.
3. ACLU. “What’s Wrong With Public Video Surveillance?” 2002. https://www.aclu.org/technology-and-liberty/whats-wrong-public-video-surveillance
4. Agustina, José R, and Gemma Galdon Clavell. “The impact of CCTV on fundamental rights and crime prevention strategies: The case of the Catalan Control Commission of Video surveillance Devices”. Computer Law & Security Review 27 (2011):168–174.
5. Annereau, Sally. “Regulating CCTV use in the UK”. March 2014., http://united-kingdom.taylorwessing.com/globaldatahub/article_regulating_cctv.html