@Article{wald:07:Tetty,
	title	= { {Interactive} {Isosurface} {Ray} {Tracing} {of} {Time-Varying} {Tetrahedral} {Volumes}},
	author	= { Ingo Wald and Heiko Friedrich and Aaron Knoll and Charles D Hansen },
	year	= { 2007 },
	journal	= { IEEE Transactions on Visualization and Computer Graphics },
	note	= { (Proceedings of IEEE Visualization/InfoVis 2007), (to appear) }
}