@inproceedings{DBLP:conf/sibgrapi/PrauchnerFC05,
  author    = {Jo{\~a}o Luis Prauchner and
               Carla M. D. S. Freitas and
               Jo{\~a}o Luiz Dihl Comba},
  title     = {Two-Level Interaction Approach for Transfer Function Specification},
  booktitle = {SIBGRAPI},
  year      = {2005},
  pages     = {265-272},
  ee        = {http://doi.ieeecomputersociety.org/10.1109/SIBGRAPI.2005.52},
  crossref  = {DBLP:conf/sibgrapi/2005},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/sibgrapi/2005,
  title     = {18th Brazilian Symposium on Computer Graphics and Image
               Processing (SIBGRAPI 2005), 9-12 October 2005, Natal, RN,
               Brazil},
  booktitle = {SIBGRAPI},
  publisher = {IEEE Computer Society},
  year      = {2005},
  isbn      = {0-7695-2389-7},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}