BibTeX Entry: Plane Sampling for Light Paths from the Environment Map

@article{dammertz09planesampling,
  author =       {Holger Dammertz and Johannes Hanika},
  title =        {Plane Sampling for Light Paths from the Environment Map},
  journal =      {Journal of graphics, gpu and game tools},
  volume =       14,
  number =       2,
  pages =        {25--31},
  year =         2009
}