Di Matteo, T. Max Planck Society;
Dewangan, G. C., Griffiths, R. E., Di Matteo, T., & Schurch, N. J. (2004). Iron Kα emission from the low-luminosity active galaxies M81 and NGC 4579. The Astrophysical Journal, 607(2, Part 1), 788-793. Retrieved from http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v607n2/59229/brief/59229.abstract.html.