M. J. Kirschner: Oxygen En: Ullmann’s Encyclopedia of Industrial Chemistry. Wiley-VCH Verlag, Weinheim 2017, COI:10.1002/14356007.a18_329.pub2
doi.org
(Aŭgusto 2008) “Electrons, life and the evolution of Earth's oxygen cycle”, Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences363 (1504), p. 2705–16. doi:10.1098/rstb.2008.0054.