Pukhan sahoe ŭi kujo wa pyŏnhwa - Ko, Hyŏn-uk; Kim, Yŏng-ju; Kim, Yong-gi; To, Hŭng-nyŏl; Pak, Kyŏng-ae (Kyŏngnam Taehakkyo Kŭktong Munje Yŏn'guso, 1990)