Yun-gyŏng Ŏ

• Ch'odŭng chungdŭng chillo chido p'ŭrogŭraem (CDP-E/CDP-M) kaejŏng yŏn'gu
• Ch'odŭng haksaeng chillo insik kŏmsa kaebal yŏn'gu (2-ch'a yŏndo)
• Chigŏp sŏnhodo kŏmsa kaejŏng yŏn'gu (1-ch'a yŏndo)
• Chʻodŭng haksaeng chillo insik kŏmsa togu kaebal yŏnʼgu