Use of Histogram Distances in Iris Authentication. - Seung-Seok Choi; Sungsoo Yoon; Sung-Hyuk Cha; Charles C. Tappert (IC-AI, 2004)

Writer Profiling Using Handwriting Copybook Styles. - Sungsoo Yoon; Seung-Seok Choi; Sung-Hyuk Cha; Charles C. Tappert (ICDAR, 2005)

On the Individuality of the Iris Biometric. - Sungsoo Yoon; Seung-Seok Choi; Sung-Hyuk Cha; Yillbyung Lee; Charles C. Tappert (ICIAR, 2005)