
https://www.imf.org/en/News/Articles/2024/03/27/germanys-real-challenges-are-aging-underinvestment-and-too-much-red-tape

https://cerre.eu/wp-content/uploads/2023/07/CERRE-Draft-Issue-Paper-DMA-Output-Indicators.pdf

http://www.cobcoe.eu/files/cobcoe-brexit-report-september-2017-e-Y4G2st.pdf