@Article{SCI:Pfi2001a,
  author =    "H. Pfister and B. Lorensen and C. Bajaj and G.
              Kindlmann and W. Schroeder and L.S. Avila and K.M.
              Raghu and R. Machiraju and  J. Lee",
  title =     "The transfer function bake-off",
  journal =   "IEEE Computer Graphics and Applications",
  volume =    "21",
  number =    "1",
  pages =     "16--22",
  year =      "2001",
  publisher = "IEEE",
  doi =       "10.1109/38.920623",
  url =       "http://www.sci.utah.edu/publications/Pfi2001a/The Transfer Function Bake-Off.pdf",
}