1. Cai, Y., Zhu, D. (2016) Fraud detections for online businesses: A perspective from blockchain technology. Financial Innovation, 2(1), 20. https://doi.org/10.1186/s40854-016-0039-4
2. We Are Social (2020). Digital Around The World In April 2020
3. Nam, K., Dutt, C. S., Chathoth, P., & Khan, M. S. (2019). Blockchain technology for smart city and smart tourism: latest trends and challenges. Asia Pacific Journal of Tourism Research, 1–15
4. Beccalli E., Bolici F., Virili, F. (2015). Anonymity or Speculation? Risks and sources of legitimacy for virtual currencies, WOA2015
5. USDT2013 Application of FinCEN’s regulations to persons administering, exchanging, or using virtual currencies. Financial Crimes Enforcement Network. 18 March 2013