http://library.fes.de/pdf-files/iez/13375.pdf
https://www.socialeurope.eu/eu-trade-policy-in-troubled-times
http://blogs.lse.ac.uk/brexit/2018/01/04/what-euroscepticism-looks-like-in-central-and-eastern-europe/
https://worldjusticeproject.org/rule-of-law-index/