Original: ISBN 0-300-05483-1 NASA Astrobiology Institute: Earth's Early Environment and Life NASA Specialized Center of Research and Training in Exobiology: Gustaf O. Arrhenius Dedicated issue of Philosophical Transactions B on Major Steps in Cell Evolution freely available.
Simplified: NASA Astrobiology Institute: Earth's Early Environment and Life NASA Specialized Center of Research and Training in Exobiology: Gustaf O. Arrhenius  (Cited on p. 108). ISBN 0-300-05483-1 Dedicated issue of Philosophical Transactions B on Major Steps in Cell Evolution freely available.