@InProceedings{SCI:Bou2007a,
  author =    "S. Boulos and D. Edwards and J.D. Lacewell and J.
              Kniss and J. Kautz and I. Wald and P. Shirley",
  title =     "Packet-based Whitted and Distribution Ray
              Tracing",
  booktitle = "Proceedings of Graphics Interface 2007",
  volume =    "234",
  pages =     "177--184",
  year =      "2007",
  keywords =  "rtcenter",
  url =       "http://www.sci.utah.edu/publications/boulos07/packetdrt.pdf",
}