S. P. Driver, A. Fernandez-Soto, W. J. Couch, S. C. Odewahn, R. A. Windhorst, S. Phillips, K. Lanzetta, A. Yahil. Morphological Number Counts and Redshift Distributions to I<26 from the Hubble Deep Field: Implications for the Evolution of Ellipticals, Spirals, and Irregulars. Astrophysical Journal. 1998, 496 (2): L93–L96. Bibcode:1998ApJ...496L..93D. arXiv:astro-ph/9802092. doi:10.1086/311257.
S. P. Driver, A. Fernandez-Soto, W. J. Couch, S. C. Odewahn, R. A. Windhorst, S. Phillips, K. Lanzetta, A. Yahil. Morphological Number Counts and Redshift Distributions to I<26 from the Hubble Deep Field: Implications for the Evolution of Ellipticals, Spirals, and Irregulars. Astrophysical Journal. 1998, 496 (2): L93–L96. Bibcode:1998ApJ...496L..93D. arXiv:astro-ph/9802092. doi:10.1086/311257.
S. P. Driver, A. Fernandez-Soto, W. J. Couch, S. C. Odewahn, R. A. Windhorst, S. Phillips, K. Lanzetta, A. Yahil. Morphological Number Counts and Redshift Distributions to I<26 from the Hubble Deep Field: Implications for the Evolution of Ellipticals, Spirals, and Irregulars. Astrophysical Journal. 1998, 496 (2): L93–L96. Bibcode:1998ApJ...496L..93D. arXiv:astro-ph/9802092. doi:10.1086/311257.