1. Blake, C. L. & Merz, C. J. (1998). UCI Repository of machine learning databases. http://www.ics.uci.edu/$\sim$mlearn/MLRepository.html . Irvine, CA: Universityi of California. Department of Information and Computer Science.
2. P. Grother, R. J. Micheals, and P. J. Philips. Face Recognition Vendor Test 2002 Performance Metrics. These proceedings.
3. P. J. Phillips, P. Grother, R. J. Micheals, D.M. Blackburn, E. Tabassi and M. Bone. Face Recognition Vendor Test 2002. Evaluation Report IR 6964, National Institute of Standards and Technology, http://www.itl.nist.gov/iad/894.03/face/face.html , March 2003.
4. Oasis XML Common Biometric Format (XCBF). http://www.oasis-open.org/committees/xcbf/
5. XML Schema Part 0: Primer. http://www.w3.org/TR/xmlschema-0/