Algaba, J., Anczarski, J., Asada, K., Baloković, M., Chandra, S., Cui, Y.-Z., Falcone, A., Giroletti, M., Goddi, C., Hada, K., Haggard, D., Jorstad, S., Kaur, A., Kawashima, T., Keating, G., Kim, J.-Y., Kino, M., Komossa, S., Kravchenko, E., Krichbaum, T., …Yonekura, Y. (2021). Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign. Astrophysical Journal Letters, 911(1), https://doi.org/10.3847/2041-8213/abef71