@InBook{shaderX4-eissele,
  author = {Eissele, M. and Diepstraten, J.},
  title  = {{GPU Performance of DirectX 9 Per-Fragment Operations Revisited}},
  year   = {2006},
  pages  = {541-560},
  series = {{Shader X4: Advanced Rendering with DirectX and OpenGL}},
  publisher = {{Charles River Media}},
  editor = {{Wolfgang Engel}}
}