Gas kinematics in powerful radio galaxies at z 2: Energy supply from star formation, AGN, and radio jetsN. P. H. Nesvadba, G. Drouart, C. De Breuck, P. Best, N. Seymour and J. VernetA&A, 600 (2017) A121DOI: https://doi.org/10.1051/0004-6361/201629357