http://artsfreedom.org/?p=5311

https://www.indexoncensorship.org/2015/09/autumn-magazine-2015-spies-secrets-and-lies/

http://www.policeforum.org/assets/docs/Critical_Issues_Series/how%20are%20innovations%20in%20technology%20transforming%20policing%202012.pdf

http://www.eth.mpg.de/3958110/mpi-eth-working-paper-0166.pdf

https://freedomhouse.org/

http://complexitycontrol.org/2016/02/19/conference-in-dusseldorf-asthetische-eigenzeiten/