Wan-gyo Chŏng

• Changgi yoyang sŏbisŭ ŭi suyo punsŏk
• Koryŏnghwa wa ŭiryo sŏbisŭ piyong
• Noin changgi yoyang pohŏm chedo ŭi munjechŏm kwa kaesŏn panghyang
• Yebang kwa yebangjŏk ŭiryo sŏbisŭ iyong ŭi yoin punsŏk
• 노인장기요양보험제도의문제점과개선방향