@InProceedings{guenther:07:BVHonGPU,
  author       = "Johannes G{\"u}nther and Stefan Popov and Hans-Peter
                 Seidel and Philipp Slusallek",
  title        = "Realtime Ray Tracing on {GPU} with {BVH}-based Packet
                 Traversal",
  booktitle    = "Proceedings of the IEEE/Eurographics Symposium on
                 Interactive Ray Tracing 2007",
  year         = 2007,
  month        = sep,
  pages        = "113--118"
}