@article {28843,
	title = {Hydrocracking of residual oils and tars - Part 4 - catalytic de-activation with bitumens from Athabasca, Cold Lake, and Lloydminister},
	volume = {Research Report 261},
	year = {1972},
	pages = {35},
	institution = {Canada Mines Branch},
	author = {McColgan, E. C. and Soutar, P. S. and Denis, J. M.}
}
