@article {713511,
	title = {Patterns of microbial sulfur isotope fractionation at low sulfate concentrations.},
	journal = {Geobiology},
	year = {2015},
	author = {Bradley, AS. and Leavitt, WD. and Schmidt, M. and Knoll, AH. and Girguis, PR. and Johnston, DT.}
}
