@article {111191,
	title = {Phosphate biomineralization in mid-Neoproterozoic protists},
	journal = {Geology},
	volume = {39},
	number = {6},
	year = {2011},
	pages = {539-542},
	author = {Cohen, P.A. and Schopf, J.W. and Butterfield, N.J. and Kudryavtsev, A. and Macdonald, F.A.}
}
