Yun, Kyông-su 尹 敬洙 Hyangga , Yôyo ûi hyôndaesông yôn'gu 鄕歌 . 麗謠 의 現代性 硏究 Yun, Kyông-su 尹 敬洙 - Sôul 1993 집문당 1993 - 542 p. Subjects--Topical Terms: Literature -- Poetics -- Three Kingdoms -- Koryô