@InProceedings{SCI:Sch2012a,
  author =    "M. Schott and T. Martin and A.V.P. Grosset and C.
              Brownlee and Thomas Hollt and B.P. Brown and S.T.
              Smith and C.D. Hansen",
  title =     "Combined Surface and Volumetric Occlusion
              Shading",
  booktitle = "Proceedings of Pacific Vis 2012",
  pages =     "169--176",
  year =      "2012",
  doi =       "10.1109/PacificVis.2012.6183588",
  keywords =  "scidac, vacet, kaust, nvidia",
  url =       "http://www.sci.utah.edu/publications/schott12/Schott_PacificVis2012.pdf",
}