@article {43110,
	title = {Determination of naphthenic acids in crude oils using nonaqueous ion exchange solid-phase extraction},
	volume = {73},
	year = {2001},
	pages = {703-707},
	publisher = {Analytical Chemistry},
	author = {Jones, D. M. and Watson, J. S. and Meredith, W. and Chen, M. and Bennett, B.}
}
