He Abundance of Dense Circumstellar Clumps in the Cassiopeia A Supernova RemnantDOI: info:10.3847/1538-4357/acb7e7v. 945158
Koo, Bon-Chul, Kim, Dongkok, Yoon, Sung-Chul, and Raymond, John C. 2023. "He Abundance of Dense Circumstellar Clumps in the Cassiopeia A Supernova Remnant." The Astrophysical Journal, 945 158. https://doi.org/10.3847/1538-4357/acb7e7.