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. arXiv:astro-ph/9704107. Bibcode: 1997ApJS..112..315H. doi:10.1086/313041
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. arXiv:astro-ph/9704107. Bibcode: 1997ApJS..112..315H. doi:10.1086/313041
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Rhee, M. H.; van Albada, T. S. (February 1996). “Short WSRT HI observations of spiral galaxies.”. Astronomy and Astrophysics Supplement115: 407-437. Bibcode: 1996A&AS..115..407R
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. arXiv:astro-ph/9704107. Bibcode: 1997ApJS..112..315H. doi:10.1086/313041