
https://dwfgroup.com/en/news-and-insights/insights/2022/10/new-subsidy-control-regime-to-come-into-effect-from-wednesday-4-january-2023

http://www.imf.org/external/np/seminars/eng/2015/secularstag/pdf/Venkateswaran.pdf

https://www.dbresearch.de/PROD/RPS_DE-PROD/PROD0000000000523908/Deutschland%3A_Konjunktur_kurzgefasst.PDF