http://gabriel-zucman.eu/files/AJZ2017.pdf
https://cepr.org/sites/default/files/policy_insights/PolicyInsight91.pdf
http://www.europarl.europa.eu/ftu/pdf/en/FTU_5.9.1.pdf
https://www.icij.org/investigations/fincen-files/us-treasury-department-removes-escape-hatch-for-criminals-from-beneficial-ownership-reporting-form/