@article {49256,
	title = {Cause of asphaltene fluorscence variation with molecular weight and its ramifications for laser mass spectrometry},
	volume = {23},
	year = {2009},
	pages = {1555-1562},
	publisher = {Energy \& Fuels},
	author = {Strausz, O. P. and Safarik, I. and Lown, E. M.}
}
