This author has not been identified. Look up 'HyungChul Kang' in GoogleThis author has not been identified. Look up 'Joon-Woo Lee' in GoogleThis author has not been identified. Look up 'Yongwoo Lee' in GoogleThis author has not been identified. Look up 'Young-Sik Kim' in GoogleThis author has not been identified. Look up 'Jong-Seon No' in Google