https://www.bancaditalia.it/media/approfondimenti/2019/pop-bari/approfondimenti-popBari.pdf
https://insightcrime.org/news/cocaine-seizures-spike-sweden-traffickers-seek-secondary-routes/
http://documents.worldbank.org/curated/en/493201582052636710/pdf/Elite-Capture-of-Foreign-Aid-Evidence-from-Offshore-Bank-Accounts.pdf