"The £4bn OneCoin scam: how crypto-queen Dr Ruja Ignatova duped ordinary people out of billions — then went missing". The Times. ↑ "Is OneCoin The Biggest Financial Fraud in History?". Fortune. ↑ Fahndungsaufruf zu Ruja Ignatova In: Bundeskriminalamt, 11. May 2022. ↑ "The Outrageous Case of OneCoin, the Billion Dollar Scam Sold as a "Bitcoin Killer"". www.bitrates.com. ↑ "Abgeschlossene Promotionen". www.jura.uni-konstanz.de. ↑ Marson, James (August 27, 2020).