@InProceedings{wald:05:PBRT,
	title	= { {Interactive} {Ray} {Tracing} {of} {Point} {Based} {Models}},
	author	= { Ingo Wald and Hans-Peter Seidel },
	year	= { 2005 },
	booktitle	= { {Proceedings} {of} {2005} {Symposium} {on} {Point} {Based} {Graphics} }
}