@INPROCEEDINGS{Gait08,
  author = {Athanasios Gaitatzes and Yiorgos Chrysanthou and Georgios Papaioannou },
  title = {Presampled Visibility for Ambient Occlusion},
  BOOKTITLE =    {Proc. 16th International Conference on Computer Graphics, Visualization and Computer Vision (WSCG 2008)},
  YEAR =         {2008},
  pages =        {17 -- 24},
  month =        {Feb},
}