Non-radial motion in the TeV blazar S5 0716+714 - The pc-scale kinematics of a BL Lacertae objectS. Britzen, V. A. Kam, A. Witzel, I. Agudo, M. F. Aller, H. D. Aller, M. Karouzos, A. Eckart and J. A. ZensusA&A, 508 3 (2009) 1205-1215DOI: https://doi.org/10.1051/0004-6361/200810875