1. BBC News (2007) Estonia hit by ‘Moscow cyber war’. May 17, 2007. http://news.bbc.co.uk/2/hi/europe/6665145.stm . Accessed 5 Jan 2010
2. Arun N (2008) Caucasus foes fight cyber war. In: BBC News. Aug 14, 2008. http://news.bbc.co.uk/2/hi/europe/7559850.stm . Accessed 5 Jan 2010
3. Lesk M (2007) The new front line: Estonia under cyberassault. IEEE Secur Priv 5(4):76–79. https://doi.org/10.1109/MSP.2007.98
4. Guadamuz A (2010) Networks, complexity and Internet regulation. Scale-free law. University of Edinburgh, Edward Elgar EE Publishing, Northampton
5. Clarke R, Knake R (2010) Cyber war—the next threat to national security and what to do about it. HarperCollins, London