http://pubdocs.worldbank.org/en/244481520499464074/Growing-United-v03-online-18-03-08.pdf
https://www.socialeurope.eu/poland-crossroads-authoritarianism-democracy
http://www.bankofengland.co.uk/publications/Documents/speeches/2017/speech976.pdf
UKIN-State-of-the-EU-Report-1.pdf (ukandeu.ac.uk)