1. Oparin, A. I. (1938) Origin of Life, New York: Macmillan Company. An unabridged republication of the work published by the Macmillan Company, New York: Dover Publications Inc., 1953, 270 pp.
2. Oparin, A. I. (1957) The Origin of Life on Earth, New York: Academic Press Inc., 495 pp.
3. Miller, S. L. (1953) A production of amino acids under possible primitive Earth conditions, Science 117, 528–529.
4. Oró, J. (1960) Synthesis of Adenine from Ammonium Cyanide, Bio. Chem. Biophys. Res. Communs 2, 407–412.
5. Oró, J., Miller, S. L., Lazcano A. (1990) The Origin and Early Evolution of Life on Earth, Annu. Rev. Earth Planet Sci. 18, 317–356.