Lee, H. Et Al. 2022. Observation Campaign of (99942) Apophis in the 2021 Apparition. Apophis T-7 Years: Knowledge Opportunities for the Science of Planetary Defense , (Berlin, Germany), 1-2.

Lee, H., Kim, M., Lee, Y., Marciniak, A., Urakawa, S., Kim, D., ... Moon, H.(2022). Observation Campaign of (99942) Apophis in the 2021 Apparition . Apophis T-7 Years: Knowledge Opportunities for the Science of Planetary Defense (pp.1-2). Berlin, Germany

Lee, H.J Et Al. "Observation Campaign of (99942) Apophis in the 2021 Apparition," Apophis T-7 Years: Knowledge Opportunities for the Science of Planetary Defense, Berlin, Germany, 2022

Lee, H.J Et Al. "Observation Campaign of (99942) Apophis in the 2021 Apparition." Apophis T-7 Years: Knowledge Opportunities for the Science of Planetary Defense , Berlin, Germany, pp.1-2, 2022

Lee, H. Et Al. (2022) . "Observation Campaign of (99942) Apophis in the 2021 Apparition." Apophis T-7 Years: Knowledge Opportunities for the Science of Planetary Defense , Berlin, Germany, pp.1-2.

@conferencepaper{conferencepaper, author={H.J Lee Et Al. }, title={Observation Campaign of (99942) Apophis in the 2021 Apparition}, congress name={Apophis T-7 Years: Knowledge Opportunities for the Science of Planetary Defense}, city={Berlin}, country={Germany}, year={2022}, pages={1-2} }