@inproceedings{DBLP:conf/ijcai/GutknechtPS91,
  author    = {Matthias Gutknecht and
               Rolf Pfeifer and
               Markus Stolze},
  title     = {Cooperative Hybrid Systems},
  booktitle = {IJCAI},
  year      = {1991},
  pages     = {824-831},
  crossref  = {DBLP:conf/ijcai/1991},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/ijcai/1991,
  editor    = {John Mylopoulos and
               Raymond Reiter},
  title     = {Proceedings of the 12th International Joint Conference on
               Artificial Intelligence. Sydney, Australia, August 24-30,
               1991},
  booktitle = {IJCAI},
  publisher = {Morgan Kaufmann},
  year      = {1991},
  isbn      = {1-55860-160-0},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}