@article {31331,
	title = {Cryogenic recovery of tar from Athabasca tar sands},
	volume = {56},
	year = {1978},
	pages = {99-102},
	publisher = {Canadian Journal of Chemical Engineering},
	url = {http://www3.interscience.wiley.com/cgi-bin/fulltext/122283904/PDFSTART},
	author = {Welmers, A. and Bergougnou, C. G. and Baker, C. G. J.}
}
