@article{etna_vol23_pp219-250,
  author  = {Kendall Atkinson and David Chien},
  title   = {A study of the fast solution of the occluded radiosity equation},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {23},
  year    = {2006},
  pages   = {219--250},
}