@InProceedings{wscg07-schafhitzel,
  author = {Schafhitzel, T. and Falk, M. and Ertl, T.},
  title  = {{Real-Time Rendering of Planets with Atmospheres}},
  year   = {2007},
  pages  = {91--98},
  booktitle = {{Journal of WSCG 2007}}
}