Yi, Chun-sang.

• Kumnyung pallye yongu, 1982-1991
• Kŭmnyung pʻallye yŏnʼgu, 1982-1991
• Kŭmyung p'allye yŏn'gu
• Kŭmnyung pʻallye yŏnʼgu, 1973-1981