Un-ch'ŏl Yang

• Kukka chŏngch'esŏng kwa Han-Chung-Il kwan'gye
• Puk-Chung kwangmul chawŏn kyoyŏk ŭi chŭngga e ttarŭn Pukhan kyŏngje ŭi tae Chungguk chongsok kanŭngsŏng e kwanhan nonŭi
• Pukhan kunsu sanŏp ŭi minsu chŏnhwan pangan yŏn'gu