@article {33101,
	title = {Natural colonization of an artifical stream bed in the Athabasca oil sands area of Alberta, Canada},
	volume = {21},
	year = {1981},
	pages = {799-803},
	publisher = {Verhandlung der Internationale Vereinigung f?r Theoretische und Angewandte Limnologie},
	author = {Retallack, J. T. and Tsui, P. T. P. and Aleksiuk, M.}
}
