3D GIS vector map watermarking using geometric distribution. - Hey-Jung Chang; Bong-Ju Jang; Suk Hwan Lee; Seung-Seob Park; Ki-Ryong Kwon (ICME, 2009)

Medical Verification Watermarking for Healthcare Information Management. - Ki-Ryong Kwon; Seung-Seob Park; Suk Hwan Lee (BIOSIGNALS, 2010)