https://www.timeshighereducation.com/world-university-rankings/latest/world-ranking
https://docs.iza.org/pp197.pdf
http://arenaide.se/wp-content/uploads/sites/2/2018/10/rap-skolval-final-reviderad.pdf
https://www.brookings.edu/articles/in-rural-alabama-a-test-for-talent-driven-economic-development/