TY - RPRT TI - Efficient iris recognition by characterizing key local variations. AU - Li Ma AU - Tieniu Tan AU - Yunhong Wang AU - Dexin Zhang PY - 2004 DO - 10.1109/tip.2004.827237 UR - https://pubmed.ncbi.nlm.nih.gov/15648865/ ID - 15648865 ER -