@article {48549,
	title = {Coagulation of bitumen with kaolinite in aqueous solutions containing Ca2+, Mg2+ and Fe3 : effect of citric acid},
	volume = {324},
	year = {2008},
	pages = {85-91},
	publisher = {Journal of Colloid and Interface Science},
	author = {Gan, W. B. and Liu, Q.}
}
