@article {30754,
	title = {Bitumen extraction from tar sands with microbial surfactants. In : The oil sands of Canada - Venezuela 1977, editors, David A. Redford and Alvin G. Winestock, Proceedings of the Canada-Venezuela Oil Sands Symposium, Edmonton, Alberta, Canada, May 30th to },
	volume = {CIM Special Volume 17},
	year = {1977},
	pages = {705-710},
	institution = {Canadian Institute of Mining and Metallurgy},
	author = {Gerson, D. F. and Zajic, J. E.}
}
