@article{Howison:TVCG-VR:2012,
  author = {Mark Howison and E. Wes Bethel and Hank Childs},
  title = {{Hybrid Parallelism for Volume Rendering on Large, Multi, and Many-core Systems}},
  journal = {IEEE Transactions on Visualization and Computer Graphics},
  year = 2012,
  volume = 18,
  number = 1,
  month = jan,
  pages = {17--29},
  note = {LBNL-4370E},
}