So-mi Sŏng
Estimating the cost of administering the Department of Defense Small Business Innovation Research (SIBR) Program
Titanium
Hanʾguk ŭi penchʻŏ
Kisul hyŏksin ŭi kyŏngje punsŏk
Kongjŏng kŏrae kwallyŏn pŏmnyŏng ŭi kaesŏn pangan
Sanŏp chiwŏn chŏngchʻaek
Strategic choices in science and technology
Tunoe Hanʼguk 21 che-2 tanʼgye saŏp ŭi sŏngkwa pʻyŏngka mohyŏng kwa chŏngchʻaekchŏk sisachŏm