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Ferris, J.P. (June 1999). "Prebiotic Synthesis on Minerals: Bridging the Prebiotic and RNA Worlds". Biological Bulletin. Evolution: A Molecular Point of View. 196 (3): 311–314. doi:10.2307/1542957. JSTOR1542957. PMID10390828.
Penny, David; Poole, Anthony (December 1999). "The nature of the last universal common ancestor". Current Opinion in Genetics & Development. 9 (6): 672–677. doi:10.1016/S0959-437X(99)00020-9. PMID10607605.
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Heckman, Daniel S.; Geiser, David M.; Eidell, Brooke R.; Stauffer, Rebecca L.; Kardos, Natalie L.; Hedges, S. Blair (10 August 2001). "Molecular Evidence for the Early Colonization of Land by Fungi and Plants". Science. 293 (5532): 1129–1133. doi:10.1126/science.1061457. PMID11498589.
Nield, Ted (2009). "Moonwalk"(PDF). Geoscientist. 18 (9). Geological Society of London: 8. Archived from the original(PDF) on June 5, 2011. Retrieved April 18, 2012.