https://www.princeton.edu/~rbenabou/papers/beliefs%20qje%201%20web.pdf
http://www.gov.scot/About/Government/Sewel/KeyFacts
https://www.tabletmag.com/sections/news/articles/american-crisis-walter-russell-mead-via-meadia
https://www.cambridge.org/core/journals/government-and-opposition/article/partybased-sovereignism-in-eu-countries-main-patterns-and-their-justification/D0B84A3AEF9D4045BF4824B9353FEEAD