1. Ankenbrand, T., Dietrich, A., & Bieri, D. (2017). IFZ FinTech Study 2017. Zug: Lucerne University of Applied Sciences and Arts. Verlag IFZ.
2. Bech, M., & Garrat, R. (2017, September). Central bank cryptocurrencies. BIS Quarterly Review.
3. Bitfinex (2017). - https://www.bitfinex.com/fees
4. Bouoiyour, J., & Selmi, R. (2017). Ether: Bitcoin’s competitor or ally?
5. CoinMarketCap (2017). - https://coinmarketcap.com/