@article {45680,
	title = {Spectrophotometric measurement of asphaltene concentration},
	volume = {22},
	year = {2004},
	pages = {647-664},
	publisher = {Petroleum Science and Technology},
	author = {Alboudwarej, H. and Jakher, R. K. and Svrcek, W. Y. and Yarranton, H. W.}
}
