@misc{indiciae9140ac8a52ed,
  title = {Direct Volume Rendering with Shading via Three-Dimensional Textures},
  author = {VanGelder, Allen and Kim, Kwansik},
  year = {1996},
  url = {https://ntrs.nasa.gov/citations/19970022121},
  note = {Source identifier: 19970022121}
}