* Steigman, Gary, Primordial Nucleosynthesis: Successes And Challenges ; Forensic Cosmology: Probing Baryons and Neutrinos With BBN and the CBR ; and Big Bang Nucleosynthesis: Probing the First 20 Minutes* R. A. Alpher, H. A. Bethe, G. Gamow, "The Origin of Chemical Elements", "Physical Review" 73 (1948), 803.
* Steigman, Gary, Forensic Cosmology: Probing Baryons and Neutrinos With BBN and the CBR and Big Bang Nucleosynthesis: Probing the First 20 Minutes*R. A. Alpher, H. A. Bethe, G. Gamow, "The Origin of Chemical Elements,""Physical Review" 73 (1948), 803.