Kang Ryoung Park Min Cheol Whang Joa Sang Lim Yongjoo Cho Fake Iris Detection Based on Multiple Wavelet Filters and Hierarchical SVM. 246-256 2006 conf/icisc/2006 ICISC http://dx.doi.org/10.1007/11927587_21 db/conf/icisc/icisc2006.html#ParkWLC06