1. Castillo, J. B. (2013, September 21), “Bitcoin: A Primer for Policymakers”. Mercatus Center. George Mason University.
2. Tschorsch, F., & Scheuermann, B. (2017, October 24). “Bitcoin and Beyond: A Technical Survey on Decentralized Digital Currencies”, IEEE Communications Surveys & Tutorials, pp. 2084-2123.
3. Cuthbertson, A. (2015, November 15). “Bitcoin now accepted by 100,000 merchants worldwide”, International Business Times. IBTimes Co., Ltd.
4. Maguder, K. P. (2015, June 18), “Bitcoin your way to a double espresso”, cnn.com. CNN.
5. Mick, J. (2013, January 20),”Cracking the Bitcoin: Digging Into a $131M USD Virtual Currency”, Daily Tech.
6. The magic of mining. (2015, January 13). The Economist.
7. Hileman, G., & Rauchs, M. (2017). "Global Cryptocurrency Benchmarking Study". UK: Cambridge University.
8. Dougherty, C. (2014, April 17). "Bankers Balking at Bitcoin in US as Real-World Obstacles Mount". bloomberg.com. Bloomberg.
9. Lee, T. (2013, October 12). "Five surprising facts about Bitcoin. The Washington Post. .
10. Salyer, K. (2014, February 9). "Fleeing the Euro for Bitcoins. Bloomberg L.P. .
11. Shin, L. (2015, December 13). "Should You Invest In Bitcoin? 10 Arguments In Favor As Of December 2015". Forbes.
12. Yelowitz, M. G. (2014). “Characteristics of Bitcoin Users: An Analysis of Google Search Data”. Social Science Research Network.
13. Lavin, T. (2014, March 25). “The SEC Shows Why Bitcoin Is Doomed”. bloomberg.com. Bloomberg LP.
14. Colombo, J. (2013, December 20). "Bitcoin May Be Following This Classic Bubble Stages Chart. Forbes.
15. Williams, M. T. (11 November 2014). "Virtual Currencies – Bitcoin Risk". World Bank Conference. Boston University. Washington DC.