PerlinF93'

@inproceedings{DBLP:conf/siggraph/PerlinF93,
  author    = {Ken Perlin and
               David Fox},
  title     = {Pad: an alternative approach to the computer interface},
  booktitle = {SIGGRAPH},
  year      = {1993},
  pages     = {57-64},
  ee        = {http://doi.acm.org/10.1145/166117.166125},
  crossref  = {DBLP:conf/siggraph/1993},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/siggraph/1993,
  title     = {Proceedings of the 20th Annual Conference on Computer Graphics
               and Interactive Techniques, SIGGRAPH 1993},
  booktitle = {SIGGRAPH},
  publisher = {ACM},
  year      = {1993},
  isbn      = {0-89791-601-8},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}