@InProceedings{SCI:Fri2007a,
  author =    "H. Friedrich and I. Wald and P. Slusallek",
  title =     "Interactive Iso-Surface Ray Tracing of Massive
              Volumetric Data Sets",
  booktitle = "Proceedings of the 2007 Eurographics Symposium on
              Parallel Graphics and Visualization",
  pages =     "109--116",
  year =      "2007",
  keywords =  "volume rendering, parallel visualization,
              interactive rt distributed interactive ray tracing
              dirt, rtcenter, large dataset visualization",
  url =       "http://www.sci.utah.edu/publications/friedrich07/async.pdf",
}