Han'guk ŭi pin'gon kwa pulp'yŏngdŭng Han'guk sahoe ŭi minjuhwa wa kwallyŏn hayŏ - Yun, To-hyŏn; Kim, Sŏng-hŭi; Kim, Chong-hun (Minjuhwa Undong Kinyŏm Saŏphoe, 2005)