@TechReport{tr02-kraus,
  author = {Martin Kraus and Thomas Ertl},
  title  = {{Implementing Ray Casting in Tetrahedral Meshes with Programmable Graphics Hardware}},
  year   = {2002},
  number = {{1}},
  month = {{3}},
  note = {{Technical Report}},
  institution = {{Universit\"at Stuttgart, Abteilung f\"ur Visualisierung und Interaktive Systeme}}
}