1. Knuckleprint polyu. 〈http://www4.comp.polyu.edu.hk/biometrics/FKP.htm〉.
2. Palmprint casia. 〈http://www.cbsr.ia.ac.cn〉.
3. Palmprint polyu. 〈http://www.comp.polyu.edu.hk/biometrics〉.
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5. G. Badrinath, P. Gupta, Palmprint based recognition system using phase-difference information, Future Gener. Comput. Syst., 2014, in press.