@Article{SCI:Chi2007a,
  author =    "D. Chisnall and M. Chen and C.D. Hansen",
  title =     "Ray-Driven Dynamic Working Set Rendering for
              Complex Volume Scene Graphs Involving Large Point
              Clouds",
  journal =   "The Visual Computer",
  volume =    "23",
  number =    "3",
  pages =     "167--179",
  year =      "2007",
  url =       "http://www.sci.utah.edu/publications/chisnall07/Chisnall_VisualComputer2007.pdf",
}