https://www.esri.ie/system/files/publications/RS181_0.pdf
https://www.imf.org/en/News/Articles/2024/03/27/germanys-real-challenges-are-aging-underinvestment-and-too-much-red-tape
https://www.boeckler.de/pdf/p_wsi_report_39e_2018.pdf
https://www.socialeurope.eu/2017/07/time-eu-fair-movement-directive/