@Article{SCI:Gri2007b,
  author =    "C.P. Gribble and C. Brownlee and S.G. Parker",
  title =     "Practical Global Illumination for Interactive
              Particle Visualization",
  journal =   "Computers and Graphics",
  volume =    "32",
  number =    "1",
  pages =     "14--24",
  year =      "2007",
  month =     "February",
}