@article {41902,
	title = {Coking of hydroprocessing catalyst by residue fractions of bitumen},
	volume = {13},
	year = {1999},
	pages = {1037-1045},
	publisher = {Energy \& Fuels},
	author = {Gray, M. R. and Zhao, Y. X. and McKnight, C. M.. and et al}
}
