I. D. Karachentsev, V. E. Karachentseva, W. K. Huchtmeier, D. I. Markarov (2004). “A Catalog of Neighboring Galaxies”. Astronomical Journal127 (4): 2031-2068. Bibcode: 2004AJ....127.2031K. doi:10.1086/382905.
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I. D. Karachentsev, V. E. Karachentseva, W. K. Huchtmeier, D. I. Markarov (2004). “A Catalog of Neighboring Galaxies”. Astronomical Journal127 (4): 2031-2068. Bibcode: 2004AJ....127.2031K. doi:10.1086/382905.