@article {110851,
	title = {Calibrating the Cryogenian},
	journal = {Science},
	volume = {327},
	year = {2010},
	pages = {1241-1243},
	author = {Macdonald, F.A. and Schmitz, M.D. and Crowley, J.L. and Roots, C.F. and Jones, D.S. and Maloof, A.C. and Strauss, J.V. and Cohen, P.A. and Johnston, D.T. and Schrag, D.P.}
}
