Relativistic outflow drives γ-ray emission in 3C 345 F. K. Schinzel, A. P. Lobanov, G. B. Taylor, S. G. Jorstad, A. P. Marscher and J. A. Zensus A&A, 537 (2012) A70 Published online: 10 January 2012 DOI: 10.1051/0004-6361/201117705