https://www.socialeurope.eu/grids-risk-holding-back-europes-energy-transition
http://www.fdf.org.uk/news.aspx?article=8062
https://medium.com/nightingale/data-driven-storytelling-a-short-review-93926262a74a
https://economiesuisse.ch/de/artikel/schuldenbremse-so-gut-wie-vor-20-jahren-und-genauso-wichtig