https://cerre.eu/wp-content/uploads/2022/12/DMA_Institutions_and_Procedures.pdf
https://www.esri.ie/system/files/publications/RS179.pdf
https://journals.sagepub.com/doi/pdf/10.1177/00187267231218430
https://www.dbresearch.de/PROD/RPS_DE-PROD/PROD0000000000523908/Deutschland%3A_Konjunktur_kurzgefasst.PDF