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APA Citation
Xiao, H., Fan, J., Rando, R., Zhu, J., & Hu, L. (2020). further evidence of superluminal active galactic nuclei as γ‐ray sources. Astronomische Nachrichten, 341(4), 462–470. http://access.bl.uk/ark:/81055/vdc_100103803021.0x00005e