https://www.imf.org/-/media/Files/Publications/PP/2023/English/PPEA2023001.ashx
https://ukandeu.ac.uk/the-debt-brake-and-germanys-international-competitiveness/
https://www.brookings.edu/articles/the-hutchins-center-explains-the-neutral-rate-of-interest/
https://www.imk-boeckler.de/download-proxy-for-faust/download-pdf?url=http%3A%2F%2F217.89.182.78%3A451%2Fabfrage_digi.fau%2Fp_imk_report_159e_2020.pdf%3Fprj%3Dhbs-abfrage%26ab_dm%3D1%26ab_zeig%3D8946%26ab_diginr%3D8482