Tʻae-hun Yŏn

• Kiŏp kyŏngyŏngkwŏn e taehan yŏnʼgu
• Kwanggo wa chepʻum sijang kan ŭi kwanʼgye e taehan yŏnʼgu
• Oegugin chikchŏp tʻuja ŭi sanŏp kan saengsansŏng pʻagŭp hyokwa e taehan yŏnʼgu
• Yŏngŏp hwaltong kyuje sarye e taehan kyŏngjehakchŏk punsŏk