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Blankenship, R.E. (1 January 2001). "Molecular evidence for the evolution of photosynthesis". Trends in Plant Science. 6 (1): 4–6. doi:10.1016/S1360-1385(00)01831-8. PMID11164357.
Krumbein, W.E.; Brehm, U.; Gerdes, G.; Gorbushina, A.A.; Levit, G.; Palinska, K.A. (2003). "Biofilm, Biodictyon, Biomat Microbialites, Oolites, Stromatolites, Geophysiology, Global Mechanism, Parahistology". In Krumbein, W.E.; Paterson, D.M.; Zavarzin, G.A. (eds.). Fossil and Recent Biofilms: A Natural History of Life on Earth(PDF). Kluwer Academic. pp. 1–28. ISBN978-1-4020-1597-7. Archived from the original(PDF) on January 6, 2007. Retrieved 2008-07-09.