Sŏng-yŏp Yi

• Kŭllobŏl kyŏngjaeng sidae chŏkkŭk haengjŏng sirhyŏn ŭl wihan Haengjŏngbu pŏp haesŏkkwŏn ŭi chaejomyŏng
• P'ŭllaetp'om ŭi pŏp kwa chŏngch'aek
• Tijit'ŏl t'ŭraensŭ p'omeisyŏn kwa pŏp
• 데이터 와 법