https://www.boeckler.de/pdf/p_imk_report_125e_2017.pdf
https://lawliberty.org/book-review/valuable-history-weak-ideas/?utm_source=LAL+Updates&utm_campaign=95be07cfd9-LAL+Updates&utm_medium=email&utm_term=0_53ee3e1605-95be07cfd9-72558837&utm_source=newsletter&utm_medium=email&utm_campaign=20%2F10%2F2022
https://www.socialeurope.eu/not-yet-up-to-the-task-how-eurozone-members-are-gambling-away-post-covid-economic-recovery
https://www.economiesuisse.ch/de/artikel/immerhin-zugang-zu-arbeitskraeften-aus-drittstaaten-gesichert