VINCENT, F. H., M. WIELGUS,
Marek ABRAMOWICZ, E. GOURGOULHON, J-P LASOTA, T. PAUMARD and G. PERRIN. Geometric modeling of M87*as a Kerr black hole or a non-Kerr compact object.
Astronomy & Astrophysics. FR - Francouzská republika, 2021, vol. 646, February, p. "A37-1"-"A37-20", 20 pp. ISSN 0004-6361. Available from: https://dx.doi.org/10.1051/0004-6361/202037787.