Teixeira, J., 		Albuquerque, E., 		Santos, A., 		Teichrieb, V., & 		Kelner, J.
(2010).
 Improving Ray Tracing Anti-aliasing Performance through Image Gradient Analysis.
In <em>Proceedings of the 11th Symposium on High-Performance Computing Systems</em>, (pp. 144-151). Porto Alegre: SBC.