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Wille, M.; Kramers, J. D.; Nägler, T. F.; Beukes, N. J.; Schröder, S.; Meisel, Th.; Lacassie, J. P.; Voegelin, A. R. (2007). Evidence for a gradual rise of oxygen between 2.6 and 2.5 Ga from Mo isotopes and Re-PGE signatures in shales. Geochimica et cosmochimica acta, 71(10), pp. 2417-2434. New York, N.Y.: Elsevier Science 10.1016/j.gca.2007.02.019
Shotyk, W.; Weiss, D.; Appleby, P. G.; Cheburkin, A. K.; Frei, R.; Gloor, M.; Kramers, J. D.; Reese, S.; van der Knaap, W. O. (1998). History of Atmospheric Lead Deposition Since 12,370 14C yr BP from a Peat Bog, Jura Mountains, Switzerland. Science, 281(5383), pp. 1635-1640. American Association for the Advancement of Science 10.1126/science.281.5383.1635
