Sŏng-yŏn Yi

• Iminjok e taehan ŏnŏ chŏngchʻaek ŭi pyŏnchʻŏn
• Kŭllobŏl sidae Han'guk kyŏngje ŭi ihae
• Muyŏk chayuhwa hyŏpsang e ttarŭn imŏp pumun yŏnghyang punsŏk mit taeŭng pangan