This author has not been identified. Look up 'Jung-Min Pak' in GoogleThis author has not been identified. Look up 'Choon Ki Ahn' in GoogleThis author has not been identified. Look up 'Yung Hak Mo' in GoogleThis author has not been identified. Look up 'Myo-Taeg Lim' in GoogleThis author has not been identified. Look up 'Moon-Kyou Song' in Google