References and Further Reading

Livio, Mario, The Golden Ratio, Review, 2003

Wells, David, The Penguin Dictionary of Curious And Interesting Numbers, Penguin, 1997

Bamford, James, Body of Secrets: Anatomy of the Ultra-Secret National Security Agency, Anchor Books, 2002

Keefe, Patrick Radden, Chatter: Dispatches from the Secret World of Global Eavesdropping, Random House, 2005

Richelson, Jeffrey T., The Wizards of Langley: Inside the CIA’s Directorate of Science and Technology, Westview, 2002