
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.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef20003en.pdf

https://www.icij.org/inside-icij/2023/10/uk-authorities-criticized-for-failing-to-prosecute-financial-crime-enablers-and-rich-tax-cheats/