@InProceedings{heidrich:1999:PixelTextures,
  author =       "W. Heidrich and R. Westermann and H-P. Seidel and T. Ertl",
  title =        "Applications of Pixel Textures in Visualization and Realistic Image Synthesis",
  booktitle =    "ACM Symposium on Interactive 3D Graphics 1999",
  year =         "1999"
}