The jet of Markarian 501 from millions of Schwarzschild radii down to a few hundredsM. Giroletti, G. Giovannini, W. D. Cotton, G. B. Taylor, M. A. Pérez-Torres, M. Chiaberge and P. G. EdwardsA&A, 488 3 (2008) 905-914DOI: https://doi.org/10.1051/0004-6361:200809784
