Spacing Based Authentication Protocol for Low-Cost RFID. - Zhen-Ai Jin; Zi-Qiang Cheng; Kee-Young Yoo (FGCN (1), 2008)

A New Steganography Scheme Based on an Index-Color Image. - Se-Min Kim; Zi-Qiang Cheng; Kee-Young Yoo (ITNG, 2009)