Leonid Kompanets Janusz Bobulski Roman Wyrzykowski Pseudo-entropy Similarity for Human Biometrics. 67-77 2002 conf/eccv/2002w Biometric Authentication http://link.springer.de/link/service/series/0558/bibs/2359/23590067.htm db/conf/eccv/eccv2002w.html#KompanetsBW02