https://www.europarl.europa.eu/doceo/document/TA-9-2021-0430_EN.pdf
https://www.dgb-bestellservice.de/besys_dgb/pdf/DGB15130.pdf
https://ec.europa.eu/info/sites/info/files/opinion-comite-adhoc-2016-10-26_en.pdf
https://www.bruegel.org/wp-content/uploads/2021/11/PC-23-171121-1.pdf