https://committees.parliament.uk/publications/23257/documents/169721/default/
https://www.imk-boeckler.de/download-proxy-for-faust/download-pdf?url=http%3A%2F%2F217.89.182.78%3A451%2Fabfrage_digi.fau%2Fp_imk_report_152e_2020.pdf%3Fprj%3Dhbs-abfrage%26ab_dm%3D1%26ab_zeig%3D8849%26ab_diginr%3D8482
https://publications.europa.eu/en/publication-detail/-/publication/506ecd7a-d51d-40cc-82f2-c8403ab57150
https://www.bruegel.org/wp-content/uploads/2021/09/PC-2021-18-0909.pdf