https://www.imf.org/~/media/Files/Publications/PP/2019/PPEA2019007.ashx
https://insightcrime.org/news/digital-gold-rush-how-bitcoin-helps-organized-crime/
http://www.europeaninstitute.org/index.php/311-european-affairs/ea-october-2017/2242-as-chinese-investment-rises-in-europe-brussels-proposes-greater-scrutiny-of-foreign-purchases-of-eu-based-companies
https://www.eppo.europa.eu/en/news/italy-56-people-and-two-companies-indicted-criminal-association-aimed-systemic-agricultural