Size and disk-like shape of the broad-line region of ESO 399-IG20 F. Pozo Nuñez, C. Westhues, M. Ramolla, C. Bruckmann, M. Haas, R. Chini, K. Steenbrugge, R. Lemke and M. Murphy A&A, 552 (2013) A1 Published online: 13 March 2013 DOI: 10.1051/0004-6361/201321047