| 1 |
Yang, H. -J., Kim, S., Yim, I., et al., 2020, A Study of Articles related on Astronomy published in North Korea Media, PKAS, 35, 1-9/
|
|
| 2 |
Mihn B. -H., Yun Y.-H., Kim S. H., & Ki H. C., 2020, Mechanical Power System of Tongcheon-ui, an Astronomical Clock made by Hong, Dae-yong, PKAS 35, 43 https://doi.org/10.5303/PKAS.2020.35.3.043/
|
|
| 3 |
Kim, S. H., Mihn, B. -H., Seo, Y. -K., & Lee, Y. S., 2018, Life and Astronomical Contribution of Song, I-Yeong, PKAS, 33, 31/
|
|