https://www.federalreserve.gov/newsevents/speech/files/powell20200827a.pdf
https://www.boeckler.de/pdf/p_wsi_report_52_2019.pdf
https://www.cesifo-group.de/DocDL/EEAG-2018.pdf
https://www.socialeurope.eu/2017/06/mercron-franco-german-tandem-back-berlins-terms/