Hŭi-sŏng Hŏ

• Chŏjakkwŏn Simŭi Chojŏng Wiwŏnhoe chojŏng chedo ŭi kaesŏn pangan e taehan yŏnʼgu
• Chŏjakkwŏn witʻak kwalli chedo kaesŏn pangan yŏnʼgu
• Chŏjangmul e taehan sayongkwŏn mit chŏpkŭnkwŏn ŭi munje e kwanhan yŏnʼgu
• Sin chŏjakkwŏnpŏp chʻukcho kaesŏl
• Sinʼgo Chŏjakkwŏnpŏp kaesŏl