@Article{wald:04:VVH,
  author       = "Ingo Wald and Johannes G{\"u}nther and Philipp
                 Slusallek",
  title        = "Balancing Considered Harmful -- Faster Photon Mapping
                 using the Voxel Volume Heuristic",
  journal      = "Computer Graphics Forum",
  year         = 2004,
  volume       = 22,
  number       = 3,
  pages        = "595--603",
  note         = "(Proceedings of Eurographics)"
}