"Distance Measures in Cosmology," D.W. Hogg (2000),
arXiv:astro-ph/9905116;
"Warm Molecular Gas in the Pirmeval Galaxy 10214+4724", P.M. Solomon,
D. Downes, and S.J.E. Radford (1992), Ap.J. 398, L29;
"First-year WMAP observations...", Spergel et al., ApJS 148:175 (2003).
"Submillimetre and far-infrared spectral energy distributions of
galaxies...", A.W. Blain, V.E. Barnard \& S.C. Chapman 2003,
MNRAS 338, 733.