Yu, Si-yŏng (Professor of Economics)

• Widaehan yŏngdoja Kim Chŏng-il tongji e ŭihan chuch'e ŭi kyŏngje kwalli iron ŭi simhwa palchŏn
• Widaehan yŏngdoja Kim Chŏng-il tongji kkesŏ palk'isin chuch'e ŭi kyŏngje kwalli wŏlli, ch'egye, pangbŏp