Kyu-jŏng Yi

• Int'ŏnet kiban sŏbisŭ pŏpche kaesŏn pangan yŏn'gu =
• Int'ŏnet kiban sŏbisŭ ŭi chŏngbo poho rŭl wihan pŏp, chedo kaesŏn pangan
• T'ongsin kwagŭm sŏbisŭ hwalsŏnghwa rŭl wihan pŏp chedo kaesŏn pangan