- Making iris recognition more reliable and spoof resistant, by Adam Czajka, Przemek Strzelczyk, and Andrzej Pacut, SPIE 2007.
- Biometric Technology Today has many articles on iris identification.
- Introduction to Iris Recognition by John Daugman
NIJ-TSA Iris RecognItion Study 2006 (IRIS06). A test to evaluate online, offline, and off-axis performance of three commercially-available iris recognition systems.