@Article{SCI:Wal2008a,
  author =    "I. Wald and T. Ize and S.G. Parker",
  title =     "Fast, Parallel, and Asynchronous Construction of
              BVHs for Ray Tracing Animated Scenes",
  journal =   "Computers and Graphics",
  volume =    "32",
  number =    "1",
  pages =     "3--13",
  year =      "2008",
  month =     "February",
  url =       "http://www.sci.utah.edu/publications/wald08/AsyncBVHJournal.pdf",
}