@TechReport{SCI:Bou2006b,
  author =    "S. Boulos and I. Wald and P. Shirley",
  title =     "Geometric and Arithmetic Culling Methods for
              Entire Ray Packets",
  number =    "UUCS-06-010",
  year =      "2006",
  institution = "School of Computing, University of Utah",
  type =      "School of Computing Technical Report",
  keywords =  "rtcenter",
  url =       "http://www.sci.utah.edu/publications/boulos06/UUCS-06-10.pdf",
}