
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_159e_2020.pdf%3Fprj%3Dhbs-abfrage%26ab_dm%3D1%26ab_zeig%3D8946%26ab_diginr%3D8482

https://www.bruegel.org/system/files/2024-05/PB%2008%202024_1.pdf

https://www.ips-journal.eu/topics/european-union/beware-the-low-hanging-fruit-5019/?utm_campaign=en_869_20210305&utm_medium=email&utm_source=newsletter