Hŭi-yŏl Sŏ

• Chose ch'ŭngmyŏn esŏŭi kiŏp chibae kujo wa semusa ŭi yŏkhal chŭngdae kanŭngsŏng e kwanhan yŏn'gu
• Pŏbin sepŏp kangŭi
• Sobi sejepŏp
• Sodŭk sepŏp