@article {36632,
	title = {Structural group analysis of residues from Athabasca bitumen},
	volume = {7},
	year = {1989},
	pages = {599-610},
	publisher = {Petroleum Science and Technology},
	author = {Gray, M. R. and Choi, J. H. K. and Egiebor, N. O.. and Kirchen, R. p. and Sanford, E. C.}
}
