@article {Beard2003,
	title = {{Iron isotope constraints on Fe cycling and mass balance in oxygenated Earth oceans}},
	journal = {Geology},
	volume = {31},
	number = {7},
	year = {2003},
	pages = {629{\textendash}632},
	issn = {0091-7613},
	doi = {10.1130/0091-7613(2003)031<0629:IICOFC>2.0.CO;2},
	url = {http://dx.doi.org/10.1130/0091-7613(2003)031{\%}3C0629:IICOFC{\%}3E2.0.CO 2},
	author = {Beard, B L and Johnson, C M and Von Damm, K L and Poulson, R L}
}
