@Article{Darsa:1998:WCEIBS,
  author =       "L. Darsa and B. Costa and A. Varshney",
  title =        "Walkthroughs of Complex Environments using Image-Based Simplification",
  journal =      "Computers and Graphics",
  volume =   "22, No. 1",
  month =    "January",
  year =     "1998",
  pages =        "55 -- 70"
}