Large-scale motion, oscillations and a possible halo on the counter-jet side in 1803+784 S. Britzen, T. P. Krichbaum, R. G. Strom, A. Witzel, T. W. B. Muxlow, L. I. Matveenko, R. M. Campbell, W. Alef, C. A. Hummel and A. Zensus A&A, 444 2 (2005) 443-454 Published online: 25 November 2005 DOI: 10.1051/0004-6361:20041823