@Article{SCI:Whi2002a,
  author =    "R.T. Whitaker and V. Elangovan",
  title =     "A Direct Approach to Estimating Surfaces in
              Tomographic Data",
  journal =   j-JMIA,
  volume =    "6",
  number =    "3",
  pages =     "235--249",
  year =      "2002",
  keywords =  "ip image processing signal processing,
              segmentation, surface processing, imaging",
}