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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])
W. Bian et Q. Gu, «The Eddington Ratios in Seyfert 2 Galaxies with and without Hidden Broad-Line Regions», The Astrophysical Journal, vol.657, no1, , p.159-166 (DOI10.1086/510708, Bibcode2007ApJ...657..159B, lire en ligne[PDF])
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])
John S. Mulchaey, Michael W. Regan et Arunav Kundu, «The Fueling of Nuclear Activity. I. A Near-Infrared Imaging Survey of Seyfert and Normal Galaxies», The Astrophysical Journal Supplement Series, vol.110, no2, , p.299-319 (DOI10.1086/313005, Bibcode1997ApJS..110..299M, lire en ligne[PDF])
W. Bian et Q. Gu, «The Eddington Ratios in Seyfert 2 Galaxies with and without Hidden Broad-Line Regions», The Astrophysical Journal, vol.657, no1, , p.159-166 (DOI10.1086/510708, Bibcode2007ApJ...657..159B, lire en ligne[PDF])
John S. Mulchaey, Michael W. Regan et Arunav Kundu, «The Fueling of Nuclear Activity. I. A Near-Infrared Imaging Survey of Seyfert and Normal Galaxies», The Astrophysical Journal Supplement Series, vol.110, no2, , p.299-319 (DOI10.1086/313005, Bibcode1997ApJS..110..299M, lire en ligne[PDF])