1. An introduction to biometric recognition;Jain;IEEE Transactions on Circuits and Systems for Video Technology,2004
2. Iris recognition;Daugman;American scientist,2001
3. L. Flom, A. Safir, Iris Recognition System, U.S. Patent # 4,641,349; 1987.
4. The importance of being random: statistical principles of iris recognition;Daugman;Pattern Recognition,2002
5. How iris recognition works;Daugman;IEEE Transactions on Circuits and Systems for Video Technology,2004