@article{kniep2009visualizationlightscenes,
  title = {Efficient and Accurate Visualization of Complex Light Sources},
  author = {Kniep, Stefan and Haering, S. and Magnor, Marcus},
  journal = {Computer Graphics Forum (Proc. of Eurographics {EG})},
  volume = {28},
  number = {4},
  pages = {1073--1081},
  month = {Jun},
  year = {2009}
}