@article {31140,
	title = {Thermal cracking of Athabasca bitumen : correlation of reactor voidage in vertical two-phase flow},
	volume = {Canada CANMET report 77-48},
	year = {1977},
	pages = {38},
	institution = {Canada Centre for Mineral and Energy Technology},
	author = {Shah, A. M. and Pruden, B. B. and Denis, J. M.}
}
