@Article{wald:05:IsoSurfaceRT,
	title	= { {Faster} {Isosurface} {Ray} {Tracing} {using} {Implicit} {KD-Trees}},
	author	= { Ingo Wald and Heiko Friedrich and Gerd Marmitt and Philipp Slusallek and Hans-Peter Seidel },
	year	= { 2005 },
	publisher	= { IEEE },
	journal	= { IEEE Transactions on Visualization and Computer Graphics }
}