https://www.econstor.eu/bitstream/10419/271918/1/cesifo1_wp10274.pdf
https://www.congress.gov/116/crpt/hrpt346/CRPT-116hrpt346.pdf
https://securingdemocracy.gmfus.org/wp-content/uploads/2020/08/ASD-Covert-Foreign-Money.pdf
https://www.comsuregroup.com/media/2251/fines-report-2023-final.pdf