@InProceedings{SCI:Kin99,
  author =    "G.L. Kindlmann and D.M. Weinstein",
  title =     "Hue-Balls and Lit-Tensors for Direct Volume
              Rendering of Diffusion Tensor Fields",
  booktitle = "Proceedings of the {IEEE} Visualization 99",
  pages =     "183--189",
  year =      "1999",
  keywords =  "scalar field methods, volume rendering, transfer
              functions, tensor field methods, diffusion tensor
              imaging, scientific visualization",
  url =       "http://www.sci.utah.edu/publications/gk99/vis99_hueballs-paper.ps.gz",
  url =       "http://www.sci.utah.edu/publications/gk99/vis99_hueballs-paper.ps",
  url =       "http://www.sci.utah.edu/publications/gk99/vis99_hueballs-paper.pdf",
}