@Article{SCI:Coh2003a,
  author =    "D. Cohen-Or and Y.L. Chrysanthou and C.T. Silva
              and F. Durand",
  title =     "A Survey of Visibility for Walkthrough
              Applications",
  journal =   "IEEE Transactions on Visualization and Computer
              Graphics",
  volume =    "9",
  number =    "3",
  pages =     "412--431",
  year =      "2003",
  publisher = "IEEE Computer Society",
  address =   "Los Alamitos, CA, USA",
  issn =      "1077-2626",
  url =       "http://www.sci.utah.edu/publications/cohen-or03/tvcg2003bcr.pdf",
}