@article {483621,
	title = {Statistical Analysis of Iron Geochemical Data Suggests Limited Late Proterozoic Oxygenation},
	journal = {Nature},
	volume = {523},
	year = {2015},
	note = {
	
		
			
				
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},
	pages = {451-454. doi:10.1038/nature14589},
	author = {Sperling, E. A. and Wolock, C. J. and Morgan, A. S. and Gill, B.C. and Kunzmann, M. and Halverson, G. P. and MacDonald, F. A. and Knoll, A.H. and Johnston, D. T.}
}
