http://www.ips-journal.eu/regions/europe/article/show/a-banking-union-without-unity-2181/
https://www.bundesverfassungsgericht.de/SharedDocs/Pressemitteilungen/DE/2020/bvg20-032.html
https://www.veblen-institute.org/IMG/pdf/aubert_hdef.pdf
https://www.frontier-economics.com/media/5550/a-wholesale-gas-price-cap-in-europe.pdf