https://insightcrime.org/news/digital-gold-rush-how-bitcoin-helps-organized-crime/
https://piie.com/system/files/documents/2018-06-27-rosengren-presentation.pdf
http://www.eba.europa.eu/documents/10180/2101654/Letter+to+MEPs+on+the+request+to+investigate+a+possible+BUL+under+Article+17+of+Regulation+%28EU%29%20No+10932010+-+24092018.pdf
https://www.socialeurope.eu/eu-competition-policy-needs-a-fundamental-rethink