@article {37580,
	title = {Oxygen compounds in Athabasca asphaltene},
	volume = {4},
	year = {1990},
	pages = {263-270},
	publisher = {Energy \& Fuels},
	author = {Frakman, Z. and Ignasiak, T. M. and Lown, E. M. and Strausz, O. P.}
}
