@article {40834,
	title = {Biogeochemical marker profiles in cores of dated sediments from large north American lakes},
	volume = {671},
	year = {1997},
	pages = {133-150},
	publisher = {American Chemical Society Symposium Series},
	author = {Bourbonniere, R. A. and Telford, S. L. and Ziolkowski, L. A. and Lee, J. and Evans, M. S. and Meyers, P. A.}
}
