D. B. Sanders, J. M. Mazzarella, D. -C. Kim, J. A. Surace et B. T. Soifer, «The IRAS Revised Bright Galaxy Sample», The Astronomical Journal, vol.126, no4, , p.1607-1664 (DOI10.1086/376841, Bibcode2003AJ....126.1607S, lire en ligne[PDF])
Paul B. Eskridge, Jay A. Frogel, Richard W. Pogge et et al., «Near-Infrared and Optical Morphology of Spiral Galaxies», The Astrophysical Journal Supplement Serie, vol.143, no1, , p.73-111 (DOI10.1086/342340, Bibcode2002ApJS..143...73E, lire en ligne[PDF])
S. Comerón, J. H. Knapen, J. E. Beckman, E. Laurikainen, H. Salo, I. Martínez-Valpuesta et R. J. Buta, «AINUR: Atlas of Images of NUclear Rings», Monthly Notices of the Royal Astronomical Society, vol.402#4, , p.2462-2490 (DOI10.1111/j.1365-2966.2009.16057.x, Bibcode2010MNRAS.402.2462C, lire en ligne[PDF])
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Luis C. Ho, Alexei V. Filippenko et Wallace L. W. Sargent, «A Search for 'Dwarf' Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies», Astrophysical Journal Supplement, vol.112, , p.315 (DOI10.1086/313041, lire en ligne)
J. H. Knapen, L. F. Whyte, W. J. G. de Blok et J. M. van der Hulst, «The nuclear ring in the unbarred galaxy NGC 278: Result of a minor merger?», Astronomy & Astrophysics, vol.423, , p.481-493 (DOI10.1051/0004-6361:20034336, lire en ligne)
D. B. Sanders, J. M. Mazzarella, D. -C. Kim, J. A. Surace et B. T. Soifer, «The IRAS Revised Bright Galaxy Sample», The Astronomical Journal, vol.126, no4, , p.1607-1664 (DOI10.1086/376841, Bibcode2003AJ....126.1607S, lire en ligne[PDF])
Paul B. Eskridge, Jay A. Frogel, Richard W. Pogge et et al., «Near-Infrared and Optical Morphology of Spiral Galaxies», The Astrophysical Journal Supplement Serie, vol.143, no1, , p.73-111 (DOI10.1086/342340, Bibcode2002ApJS..143...73E, lire en ligne[PDF])
S. Comerón, J. H. Knapen, J. E. Beckman, E. Laurikainen, H. Salo, I. Martínez-Valpuesta et R. J. Buta, «AINUR: Atlas of Images of NUclear Rings», Monthly Notices of the Royal Astronomical Society, vol.402#4, , p.2462-2490 (DOI10.1111/j.1365-2966.2009.16057.x, Bibcode2010MNRAS.402.2462C, lire en ligne[PDF])
Luis C. Ho, Alexei V. Filippenko et Wallace L. W. Sargent, «A Search for 'Dwarf' Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies», Astrophysical Journal Supplement, vol.112, , p.315 (DOI10.1086/313041, lire en ligne)
D. B. Sanders, J. M. Mazzarella, D. -C. Kim, J. A. Surace et B. T. Soifer, «The IRAS Revised Bright Galaxy Sample», The Astronomical Journal, vol.126, no4, , p.1607-1664 (DOI10.1086/376841, Bibcode2003AJ....126.1607S, lire en ligne[PDF])
J. H. Knapen, L. F. Whyte, W. J. G. de Blok et J. M. van der Hulst, «The nuclear ring in the unbarred galaxy NGC 278: Result of a minor merger?», Astronomy & Astrophysics, vol.423, , p.481-493 (DOI10.1051/0004-6361:20034336, lire en ligne)
Paul B. Eskridge, Jay A. Frogel, Richard W. Pogge et et al., «Near-Infrared and Optical Morphology of Spiral Galaxies», The Astrophysical Journal Supplement Serie, vol.143, no1, , p.73-111 (DOI10.1086/342340, Bibcode2002ApJS..143...73E, lire en ligne[PDF])
S. Comerón, J. H. Knapen, J. E. Beckman, E. Laurikainen, H. Salo, I. Martínez-Valpuesta et R. J. Buta, «AINUR: Atlas of Images of NUclear Rings», Monthly Notices of the Royal Astronomical Society, vol.402#4, , p.2462-2490 (DOI10.1111/j.1365-2966.2009.16057.x, Bibcode2010MNRAS.402.2462C, lire en ligne[PDF])