@article {46018,
	title = {Degradation and preservation of vascular plant-derived biomarkers in grassland and forest soils from western Canada},
	volume = {74},
	year = {2005},
	pages = {377-409},
	publisher = {Biogeochemistry},
	url = {http://www.springerlink.com/content/3u2w7r7854165261/fulltext.pdf},
	author = {Otto, Angelika and Simpson, Myrna J.}
}
