@conference {darmofal_1992_stream,
	title = {Visualization of 3-d vector fields : Variations on a stream},
	booktitle = {AIAA conference paper},
	number = {AIAA-92-0074},
	year = {1992},
	keywords = {scientific visualization},
	author = {Darmofal, D L and Haimes, R}
}
