@Bibtex-file{Graphics/shadow.bib,
  title =        "Bibliography on shadow algorithms",
  author =       "Paul S. Heckbert",
  email =        "ph+@cs.cmu.edu",
  address =      "Computer Science Dept.\\ Carnegie Mellon University\\
                 Pittsburgh, Pennsylvania\\ USA",
  abstract =     "Bibliography on shadow algorithms, direct
                 illumination, area light sources, soft shadows, texture
                 mapping on graphics workstations, and related topics
                 including hemicubes and form factor calculation.",
}