Di Matteo, T. High Energy Astrophysics, MPI for Astrophysics, Max Planck Society;
Di Matteo, T., Allen, S. W., Fabian, A. C., Wilson, A. S., & Young, A. J. (2003). Accretion onto the supermassive black hole in M87. The Astrophysical Journal, 582(1), 133-140. Retrieved from http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v582n1/55543/brief/55543.abstract.html.