https://www.emcdda.europa.eu/publications/eu-drug-markets/cocaine/production_en
https://ecfsapi.fcc.gov/file/109303096909269/Sage%20&%20Carpenter,%202009.pdf
https://icsid.worldbank.org/sites/default/files/documents/Code_of_Conduct_V3_Comments_by_State_Commenter.pdf
https://www.brookings.edu/blog/up-front/2019/04/09/how-big-is-the-problem-of-tax-evasion/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=71720872