@article{mattausch-2013-Editing,
  title =      "Freeform Shadow Boundary Editing",
  author =     "Oliver Mattausch, Takeo Igarashi, Michael Wimmer",
  year =       "2013",
  pages =      "175--184",
  month =      may,
  number =     "2",
  event =      "EUROGRAPHICS 2013",
  issn =       "0167-7055",
  journal =    "Computer Graphics Forum",
  volume =     "32",
  location =   "Girona",
  keywords =   "real-time rendering, shadows",
}