Oldham, L. J.; Auger, M. W. (March 2016). "Galaxy structure from multiple tracers – II. M87 from parsec to megaparsec scales". Monthly Notices of the Royal Astronomical Society457 (1): 421–439. arXiv:1601.01323. Bibcode2016MNRAS.457..421O. doi:10.1093/mnras/stv2982.
Oldham, L. J.; Auger, M. W. (March 2016). "Galaxy structure from multiple tracers – II. M87 from parsec to megaparsec scales". Monthly Notices of the Royal Astronomical Society457 (1): 421–439. arXiv:1601.01323. Bibcode2016MNRAS.457..421O. doi:10.1093/mnras/stv2982.
Oldham, L. J.; Auger, M. W. (March 2016). "Galaxy structure from multiple tracers – II. M87 from parsec to megaparsec scales". Monthly Notices of the Royal Astronomical Society457 (1): 421–439. arXiv:1601.01323. Bibcode2016MNRAS.457..421O. doi:10.1093/mnras/stv2982.
First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way
Kazunori Akiyama1,2,3, Antxon Alberdi4, Walter Alef5, Juan Carlos Algaba6, Richard Anantua3,7,8, Keiichi Asada9, Rebecca Azulay5,10,11, Uwe Bach5, Anne-Kathrin Baczko5, David Ball12 https://iopscience.iop.org/article/10.3847/2041-8213/ac6674