https://economiesuisse.ch/sites/default/files/publications/swisscode_e_web_0.pdf
https://www.icij.org/investigations/fincen-files/u-s-treasury-faces-a-wave-of-criticism-over-faltering-push-to-unmask-anonymous-companies-and-track-dirty-money/
https://www.bertelsmann-stiftung.de/fileadmin/files/BSt/Publikationen/GrauePublikationen/WKIO_2020_final.pdf?utm_source=POLITICO.EU&utm_campaign=15a7cc1e87-EMAIL_CAMPAIGN_2020_04_08_08_59&utm_medium=email&utm_term=0_10959edeb5-15a7cc1e87-190380769
http://www.case-research.eu/files/?id_plik=5223