Krühler, T., Fraser, M., Leloudas, G., Schulze, S., Stone, N. C., van Velzen, S., Amorin, R., Hjorth, J., Jonker, P. G., Kann, D. A., Kim, S., Kuncarayakti, H., Mehner, A., & Nicuesa Guelbenzu, A. (2018). The supermassive black hole coincident with the luminous transient ASASSN-15lh. Astronomy & Astrophysics, 610:. doi:10.1051/0004-6361/201731773.