ID-based Payment system for Wireless Internet Commerce. - Sei-Mei Jin; Hyunju Lee; Sung Soo Kang; Chung S. Rhee (CSREA EEE, 2005)

The Design and Implementation of Electromotion Curtain System using PLC and CDM Controller. - Yeon-Gyu Choo; Sung Soo Kang; Bong-Gi Kim (J. Inform. and Commun. Convergence Engineering, 2010)