@article {31100,
	title = {The effect of oxygen functions on the properties of bitumen fractions. 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},
	volume = {CIM Special Volume 17},
	year = {1977},
	pages = {159-161},
	institution = {Canadian Institute of Mining and Metallurgy},
	author = {Speight, James G. and Moschopedis, Speros E.}
}
