1. Arash, M. and Alloway, T. (2013) Bitcoin ETF plan struggles to find support. The Financial Times 16 July.
2. Arthur, C. (2013) Bitcoin: Man charged over Alleged Multimillion-Dollar Ponzi Fraud. The Guardian 24 July.
3. Balchunas, E. (2013) Diamonds and Kazakhs and Bitcoins, Oh My: An ETF Parade. Bloomberg, 12 July,
http://www.bloomberg.com/news/2013-07-12/diamonds-and-kazakhs-and-bitcoins-oh-my-an-etf-parade.html
, accessed 26 July 2013.
4. Berndt, E.R. and Savin, N.E. (1977) Conflict among criteria for testing hypotheses in the multivariate linear regression model. Econometrica 45 (5): 1263–1278.
5. Bodie, Z. (1976) Common stocks as a hedge against inflation. Journal of Finance 31 (2): 459–470.