
http://www.europeaninstitute.org/index.php/311-european-affairs/ea-october-2017/2242-as-chinese-investment-rises-in-europe-brussels-proposes-greater-scrutiny-of-foreign-purchases-of-eu-based-companies

https://www.occrp.org/en/biometric-bribery-semlex/the-optimist-without-borders-inside-the-semlex-ceos-empire-of-influence

http://www.aviationlaw.eu/wp/wp-content/uploads/2013/09/Freedoms-of-the-Air-Explained.pdf