Shading in valve's source engine

Jason L. Mitchell, Gary McTaggart, Chris Green. Shading in valve's source engine. In John Finnegan, Dave Shreiner, editors, 33. International Conference on Computer Graphics and Interactive Techniques, SIGGRAPH 2006, Boston, Massachusetts, USA, July 30 - August 3, 2006, Courses. pages 129-142, ACM, 2006. [doi]

@inproceedings{MitchellMG06,
  title = {Shading in valve's source engine},
  author = {Jason L. Mitchell and Gary McTaggart and Chris Green},
  year = {2006},
  doi = {10.1145/1185657.1185832},
  url = {http://doi.acm.org/10.1145/1185657.1185832},
  researchr = {https://researchr.org/publication/MitchellMG06},
  cites = {0},
  citedby = {0},
  pages = {129-142},
  booktitle = {33. International Conference on Computer Graphics and Interactive Techniques, SIGGRAPH 2006, Boston, Massachusetts, USA, July 30 - August 3, 2006, Courses},
  editor = {John Finnegan and Dave Shreiner},
  publisher = {ACM},
}