Kyŏng-u Yi

• Chʻoegŭnse kugŏ kyŏngŏpŏp yŏnʾgu
• Kasanse silmu haesŏl
• Yebi sahoein ŭl wihan kʻŏmyunikʻeisyŏn kwa taein kwanʼgye
• 玉彙韻考