@article{ Sun:2005:Scattering,
  author = "Bo Sun and Ravi Ramamoorthi and Srinivasa Narasimhan and Shree K. Nayar",
  title = "A Practical Analytic Single Scattering Model for Real Time Rendering",
  year = "2005",
  month = aug,
  journal = "ACM Transactions on Graphics (SIGGRAPH 2005)",
  volume = "24",
  number = "3",
}