@InCollection{SCI:Iki2004a,
  author =    "M. Ikits and J.M. Kniss and A.E. Lefohn and C.D.
              Hansen",
  title =     "Volume Rendering Techniques",
  booktitle = "{GPU} Gems: Programming Techniques, Tipsand Tricks
              for Real-Time Graphics",
  pages =     "667--692",
  year =      "2004",
  editor =    "Randima Fernando",
  publisher = "Addison Wesley",
  keywords =  "scalar field methods, volume rendering",
}