http://www.transparency.org/news/feature/europe_and_central_asia_an_overall_stagnation
https://capx.co/happy-300th-birthday-to-adam-smith-his-work-is-more-relevant-than-ever/
https://www.euronews.com/2018/09/26/after-three-decades-and-trillions-in-investment-east-germany-still-trails-west
http://visegradinsight.eu/app/uploads/2019/11/EaP-2030-Trends.pdf