Nesvadba, N. P. H., Lehnert, M. D., Eisenhauer, F., Gilbert, A., Tecza, M., & Abuter, R. (2006). Extreme gas kinematics in the z=2.2 powerful radio galaxy MRC 1138-262: Evidence for efficient active galactic nucleus feedback in the early universe? Astrophysical Journal, 650(2 Part 1), 693-705. doi:10.1086/507266.