Ho, Luis C.; Filippenko, Alexei V.; Sargent, Wallace L. W. (1997). «A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies». The Astrophysical Journal Supplement Series112 (2): 315–390. doi:10.1086/313041. Bibcode: 1997ApJS..112..315H.
Faber, S. M. (1989). «Spectroscopy and Photometry of Elliptical Galaxies. VI. Sample Selection and Data Summary». The Astrophysical Journal Supplement Series69: 763–808. doi:10.1086/191327. Bibcode: 1989ApJS...69..763F.
harvard.edu
adsabs.harvard.edu
Ho, Luis C.; Filippenko, Alexei V.; Sargent, Wallace L. W. (1997). «A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies». The Astrophysical Journal Supplement Series112 (2): 315–390. doi:10.1086/313041. Bibcode: 1997ApJS..112..315H.
Faber, S. M. (1989). «Spectroscopy and Photometry of Elliptical Galaxies. VI. Sample Selection and Data Summary». The Astrophysical Journal Supplement Series69: 763–808. doi:10.1086/191327. Bibcode: 1989ApJS...69..763F.