Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) F. Onori and F. Ricci and F. La Franca and S. Bianchi and A. Bongiorno and M. Brusa and F. Fiore and R. Maiolino and A. Marconi and E. Sani and C. Vignali,Detection of faint broad emission lines in type 2 AGN – II. On the measurement of the black hole mass of type 2 AGN and the unified model,Monthly Notices of the Royal Astronomical Society: Letters,1745-3925,Oxford University Press (OUP),2017-02-21,468,1,L97-L102,https://cir.nii.ac.jp/crid/1360855570511186048,https://doi.org/10.1093/mnrasl/slx032