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Peterson, B.A.; Ellis, R.S.; Kibblewhite, E.J.; Bridgeland, M.T.; Hooley, T.; Horne, D., Number magnitude counts of faint galaxies, Astrophysical Journal, Part 2 - Letters to the Editor, Nov 1, 1979, 233: L109–L113, Bibcode:1979ApJ...233L.109P, doi:10.1086/183087
Tyson, J.A.; Jarvis, J.F., Evolution of galaxies - Automated faint object counts to 24th magnitude, Astrophysical Journal, Part - 2 Letters to the Editor, June 15, 1979, 230: L153–L156, Bibcode:1979ApJ...230L.153T, doi:10.1086/182982
Yoshii, Yuzuru; Takahara, Fumio, On the redshift-volume measurement of the cosmological density parameter, Astrophysical Journal, Part 1, Nov 1, 1989, 346: 28–33, Bibcode:1989ApJ...346...28Y, doi:10.1086/167983
David C., Koo. The evolution of field galaxies - Is Omega = 1?. Evolution of the universe of galaxies; Proceedings of the Edwin Hubble Centennial Symposium. Berkeley, CA: Astronomical Society of the Pacific: 268–285. June 21–23, 1989. Bibcode:1990ASPC...10..268K.
Colless, Matthew; Ellis, Richard S.; Broadhurst, T.J.; Taylor, Keith; Peterson, Bruce A., Faint blue galaxies - High or low redshift?, Monthly Notices of the Royal Astronomical Society, March 1993, 261: 19–38, Bibcode:1993MNRAS.261...19C, doi:10.1093/mnras/261.1.19