https://www.imf.org/-/media/Files/Publications/PP/2023/English/PPEA2023001.ashx
https://www.boeckler.de/pdf/p_wsi_report_52_2019.pdf
https://www.bruegel.org/sites/default/files/2023-06/PB%2012%202023.pdf
https://www.socialeurope.eu/the-german-debt-brake-reform-urgent