Suzana Djurcilov Kwansik Kim Pierre Lermusiaux Alex Pang Visualizing scalar volumetric data with uncertainty. 239-248 2002 26 Computers & Graphics 2 http://dx.doi.org/10.1016/S0097-8493(02)00055-9 db/journals/cg/cg26.html#DjurcilovKLP02