Hwan-yong Ch'oe

• Chach'i ippŏp ch'egye mit silt'ae chosa yŏn'gu
• Kijun injŭng chedo sŏnjinhwa rŭl wihan pŏpche chŏngbi pangan yŏn'gu
• Samu kubun ch'egye kaesŏn ŭl wihan chibang chach'ipŏp kaejŏng pangan yŏn'gu