@inproceedings{DBLP:conf/siggraph/PainterS89,
  author    = {J. Painter and
               K. Sloan},
  title     = {Antialiased ray tracing by adaptive progressive refinement},
  booktitle = {SIGGRAPH},
  year      = {1989},
  pages     = {281-288},
  ee        = {http://doi.acm.org/10.1145/74333.74362},
  crossref  = {DBLP:conf/siggraph/1989},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/siggraph/1989,
  editor    = {James J. Thomas},
  title     = {Proceedings of the 16th Annual Conference on Computer Graphics
               and Interactive Techniques, SIGGRAPH 1989},
  booktitle = {SIGGRAPH},
  publisher = {ACM},
  year      = {1989},
  isbn      = {0-201-50434-0},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}