@Article{SCI:Kno2009d,
  author =    "A. Knoll and Y. Hijazi and R. Westerteiger and M.
              Schott and C.D. Hansen and Hans Hagen",
  title =     "Volume Ray Casting with Peak Finding and
              Differential Sampling",
  journal =   "IEEE Transactions on Visualization and Computer
              Graphics",
  volume =    "15",
  number =    "6",
  pages =     "1571-1578",
  year =      "2009",
  url =       "http://www.sci.utah.edu/publications/knoll09/Knoll_TVCG2009.pdf",
}