http://blogs.lse.ac.uk/brexit/2017/08/11/book-review-shifting-baselines-of-europe/
https://merics.org/sites/default/files/2022-06/R%26D%20report_EN.pdf
https://www.sachverstaendigenrat-wirtschaft.de/fileadmin/dateiablage/gutachten/jg201819/Chapter_1.pdf
https://www.bti-project.org/en/data/rankings/status-index/