(en) Baldry, Glazebrook, Baugh et Bland‐hawthorn, « The 2dF Galaxy Redshift Survey: Constraints on Cosmic Star Formation History from the Cosmic Spectrum », The Astrophysical Journal, The American Astronomical Society, vol. 569, no 2, , p. 582–594 (DOI10.1086/339477, Bibcode2002ApJ...569..582B, arXivastro-ph/0110676)
(en) Baldry, Glazebrook, Baugh et Bland‐hawthorn, « The 2dF Galaxy Redshift Survey: Constraints on Cosmic Star Formation History from the Cosmic Spectrum », The Astrophysical Journal, The American Astronomical Society, vol. 569, no 2, , p. 582–594 (DOI10.1086/339477, Bibcode2002ApJ...569..582B, arXivastro-ph/0110676)
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(en) Baldry, Glazebrook, Baugh et Bland‐hawthorn, « The 2dF Galaxy Redshift Survey: Constraints on Cosmic Star Formation History from the Cosmic Spectrum », The Astrophysical Journal, The American Astronomical Society, vol. 569, no 2, , p. 582–594 (DOI10.1086/339477, Bibcode2002ApJ...569..582B, arXivastro-ph/0110676)
Glazebrook et Ivan Baldry, « The Cosmic Spectrum », www.astro.ljmu.ac.uk, (consulté le ).
« We thought it was interesting to make a choice in order to promote the concept of the cosmic average spectrum, which is well defined (…) followed up by a number of articles originally in 2002. Though admittedly not all journalists have chosen to promote the science side of our concept ». (en) Ivan Baldry, « FAQ », (consulté le ).
