Development of the Electromagnetic Wave Absorber for 94 GHz Radar Sensors Using Permalloy. - Chang-Mook Choi; Dong Il Kim; Rui Li; Kwang-Soob Ko (J. Inform. and Commun. Convergence Engineering, 2006)

A Study on Electromagnetic Wave Absorber for W-Band Radars Using Permalloy. - Dong Il Kim; Chang-Mook Choi; Rui Li; Dae Hee Lee (IEICE Trans. Commun., 2007)

Mathematical Algorithms for Two-Dimensional Positioning Based on GPS Pseudorange Technique. - Kwang-Soob Ko; Chang-Mook Choi (J. Inform. and Commun. Convergence Engineering, 2010)