Doppler factors, Lorentz factors and viewing angles for quasars, BL Lacertae objects and radio galaxiesT. Hovatta, E. Valtaoja, M. Tornikoski and A. LähteenmäkiA&A, 494 2 (2009) 527-537DOI: https://doi.org/10.1051/0004-6361:200811150
