1. C. Decker, R. Wattenhofer, Information propagation in the bitcoin network, in: 13th IEEE Conference on Peer-to-Peer Computing, 2013, pp. 1–10.
2. Majority is not enough: Bitcoin mining is vulnerable;Eyal,2013
3. Bitcoin protocol rules. URL http://en.bitcoin.it/wiki/Protocol_rules.
4. Bitcoin orphan blocks. URL http://blockchain.info/charts/n-orphaned-blocks.
5. S. Nakamoto, Bitcoin: A peer-to-peer electronic cash system. URL http://bitcoins.info/bitcoin-a-peer-to-peer-electroniccash-system-satoshi-nakamoto/.