@Article{Xia:1997:ARTLRPM,
  author =       "J. Xia and J. El-Sana and A. Varshney",
  title =        "Adaptive Real-Time Level-of-detail-based Rendering for Polygonal Models",
  journal =      "IEEE Transactions on Visualization and Computer Graphics",
  volume =   "3, No. 2",
  year =     "1997",
  month =    "June",
  pages =    "171 -- 183"
}