Confidence Value Based Multi Levels of Authentication for Ubiquitous Computing Environments. - He Zheng; Jin Kwak; Kyungho Son; Wansuk Lee; Seungjoo Kim; Dongho Won (ICCSA (2), 2006)

Risk Analysis Methodology for New Critical Information Infrastructure. - Jun Heo; Jong Whoi Shin; Wansuk Lee; Yoojae Won (ICSNC, 2008)