@Article{Hachisuka08:Adaptive,
  author =        {Toshiya Hachisuka and Wojciech Jarosz and Richard Peter Weistroffer and Kevin Dale and Greg Humphreys and Matthias Zwicker and Henrik Wann Jensen},
  title =         {Multidimensional Adaptive Sampling and Reconstruction for Ray Tracing},
  journal =       {ACM Transactions on Graphics (Proc. SIGGRAPH)},
  volume =        {27},
  number =        {3},
  year =          {2008},
  pages =         {33:1--10}
 }