Panmin t'ŭgwi yŏn'gu - Yi, Kang-su (Nanam Ch'ulp'an, 2003)
Based on the author's thesis (doctoral--Kungmin Taehakkyo) under title: Panminjok Haengwi T'ukpyŏl Wiwŏnhoe, 1954-50 yŏn'gu