Ho, Luis C.; Filippenko, Alexei V.; Sargent, Wallace L. W. (October 1997). «A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies». Astrophysical Journal Supplement112 (2): 315–390. doi:10.1086/313041. Bibcode: 1997ApJS..112..315H.
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Ho, Luis C.; Filippenko, Alexei V.; Sargent, Wallace L. W. (October 1997). «A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies». Astrophysical Journal Supplement112 (2): 315–390. doi:10.1086/313041. Bibcode: 1997ApJS..112..315H.