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THE FIRST 50 YEARS AT PALOMAR: 1949-1999 ; The Early Years of Stellar Evolution, Cosmology, and High-Energy Astrophysics; 5.2.1. The Mount Wilson Years ; Annu. Rev. Astron. Astrophys. 1999. 37: 445-486
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Miley, G. K.; Chambers, K. C.; van Breugel, W. J. M.; Macchetto, F. (1992). “Hubble Space Telescope imaging of distant galaxies - 4C 41.17 at Z = 3.8”. Astrophysical Journal401: L69. Bibcode: 1992ApJ...401L..69M. doi:10.1086/186673.
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THE JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY OF CANADA / JOURNAL DE LA SOCIETE ROYALE D'ASTRONOMIE DU CANADA; Vol. 83, No.6 December 1989 Whole No. 621 ; EDWIN HUBBLE 1889-1953
Lehnert, M. D.; Nesvadba, N. P. H.; Cuby, J.-G.; Swinbank, A. M.; Morris, S.; Clement, B.; Evans, C. J.; Bremer, M. N. et al. (2010). “Spectroscopic confirmation of a galaxy at redshift z = 8.6”. Nature467 (7318): 940-942. arXiv:1010.4312. Bibcode: 2010Natur.467..940L. doi:10.1038/nature09462. PMID20962840.