@article {46023,
	title = {Development of graphical methods for estimating the diffusivity coefficient of gases in bitumen from pressure-decay data},
	volume = {19},
	year = {2005},
	pages = {2041-2049},
	publisher = {Energy \& Fuels},
	author = {Sheikha, H. and Pooladi-Darvish, M. and Mehrotra, A. K.}
}
