@article {34167,
	title = {Effects of sampling and analytical uncertainty on the determination of bitumen variability in oil sand as measured by sulphur content},
	volume = {1},
	year = {1984},
	pages = {81-87},
	publisher = {AOSTRA Journal of Research},
	author = {Wallace, Dean and Kratochvil, Byron and Jo, Doris Louisa}
}
