Sŭng-gil Yi

• Chosŏnŏ chŏnja sajŏn yŏnʼgu
• Chosŏnŏ munpŏp kŏmsa yŏnʼgu
• Chosŏnŏ tanŏ haesŏngnon
• Munhwaŏ parŭm sajŏn
• Munhwaŏ parŭm sangsik
• Pulpŏpchaeng ŭi haengwi wa sonhae paesang, kaamnyu e kwanhan yŏnʼgu
• 부동산경매론
• 언어학 연구 론문집
• 조선어문법검사연구