Tonry, J. L.; Dressler, A.; Blakeslee, J. P.; Ajhar, E. A.; Fletcher, A. B.; Luppino, G. A.; Metzger, M. R.; Moore, C. B. (2001). ”The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances”. Astrophysical Journal 546 (2): sid. 681–693. doi:10.1086/318301. Bibcode: 2001ApJ...546..681T.
Macri, L. M.; Stanek, K. Z.; Bersier, D.; Greenhill, L. J.; Reid, M. J. (2006). ”A New Cepheid Distance to the Maser-Host Galaxy NGC 4258 and Its Implications for the Hubble Constant”. Astrophysical Journal 652 (2): sid. 1133–1149. doi:10.1086/508530. Bibcode: 2006ApJ...652.1133M.
Bonanos, Alceste Z. (2006). ”Eclipsing Binaries: Tools for Calibrating the Extragalactic Distance Scale”. Proceedings of the International Astronomical Union 2 (S240): sid. 79–87. doi:10.1017/S1743921307003845. Bibcode: 2007IAUS..240...79B.
JR Herrnstein (1999). ”A geometric distance to the galaxy NGC 4258 from orbital motions in a nuclear gas disk”. Nature 400 (6744): sid. 539–541. doi:10.1038/22972. Bibcode: 1999Natur.400..539H.
Karachentsev, Igor D.; Karachentseva, Valentina E.; Huchtmeier, Walter K.; Makarov, Dmitry I. (2003). ”A Catalog of Neighboring Galaxies”. The Astronomical Journal 127 (4): sid. 2031–2068. doi:10.1086/382905. Bibcode: 2004AJ....127.2031K.
Graham, Alister W. (November 2008), ”Populating the Galaxy Velocity Dispersion - Supermassive Black Hole Mass Diagram: A Catalogue of (Mbh, σ) Values”, Publications of the Astronomical Society of Australia 25 (4): 167–175, doi:10.1071/AS08013, Bibcode: 2008PASA...25..167G.
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Tonry, J. L.; Dressler, A.; Blakeslee, J. P.; Ajhar, E. A.; Fletcher, A. B.; Luppino, G. A.; Metzger, M. R.; Moore, C. B. (2001). ”The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances”. Astrophysical Journal 546 (2): sid. 681–693. doi:10.1086/318301. Bibcode: 2001ApJ...546..681T.
Macri, L. M.; Stanek, K. Z.; Bersier, D.; Greenhill, L. J.; Reid, M. J. (2006). ”A New Cepheid Distance to the Maser-Host Galaxy NGC 4258 and Its Implications for the Hubble Constant”. Astrophysical Journal 652 (2): sid. 1133–1149. doi:10.1086/508530. Bibcode: 2006ApJ...652.1133M.
Bonanos, Alceste Z. (2006). ”Eclipsing Binaries: Tools for Calibrating the Extragalactic Distance Scale”. Proceedings of the International Astronomical Union 2 (S240): sid. 79–87. doi:10.1017/S1743921307003845. Bibcode: 2007IAUS..240...79B.
JR Herrnstein (1999). ”A geometric distance to the galaxy NGC 4258 from orbital motions in a nuclear gas disk”. Nature 400 (6744): sid. 539–541. doi:10.1038/22972. Bibcode: 1999Natur.400..539H.
Karachentsev, Igor D.; Karachentseva, Valentina E.; Huchtmeier, Walter K.; Makarov, Dmitry I. (2003). ”A Catalog of Neighboring Galaxies”. The Astronomical Journal 127 (4): sid. 2031–2068. doi:10.1086/382905. Bibcode: 2004AJ....127.2031K.
Graham, Alister W. (November 2008), ”Populating the Galaxy Velocity Dispersion - Supermassive Black Hole Mass Diagram: A Catalogue of (Mbh, σ) Values”, Publications of the Astronomical Society of Australia 25 (4): 167–175, doi:10.1071/AS08013, Bibcode: 2008PASA...25..167G.
