https://www.esri.ie/system/files/publications/SUSTAT123_2.pdf
https://www.socialeurope.eu/2017/07/european-welfare-states-perform/
https://neweconomics.org/2023/08/new-eu-fiscal-rules-jeopardise-investment-needed-to-combat-climate-change
https://www.ifs.org.uk/publications/14778