@inproceedings{DBLP:conf/sac/ChenS10,
  author    = {Tao Chen and
               Markus Schneider},
  title     = {Modeling cardinal directions in the 3D space with the objects
               interaction cube matrix},
  booktitle = {SAC},
  year      = {2010},
  pages     = {906-910},
  ee        = {http://doi.acm.org/10.1145/1774088.1774276},
  crossref  = {DBLP:conf/sac/2010},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/sac/2010,
  editor    = {Sung Y. Shin and
               Sascha Ossowski and
               Michael Schumacher and
               Mathew J. Palakal and
               Chih-Cheng Hung},
  title     = {Proceedings of the 2010 ACM Symposium on Applied Computing
               (SAC), Sierre, Switzerland, March 22-26, 2010},
  booktitle = {SAC},
  publisher = {ACM},
  year      = {2010},
  isbn      = {978-1-60558-639-7},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}