https://blogs.lse.ac.uk/europpblog/2023/05/02/what-the-latest-eu-regional-competitiveness-index-leaves-out/
https://static1.squarespace.com/static/58ed40453a04116f46e8d99b/t/615493df7e967732e8b2592f/1632932843444/Better+Together.pdf
https://blogs.lse.ac.uk/europpblog/2021/10/22/unexpected-lessons-from-spains-economic-rise/