@InProceedings{	  dixstosimfil99,
  author	= {J\"{u}rgen Dix and Frieder Stolzenburg and Guillermo
		  Simari and Pablo Fillotrani},
  title		= {Automating Defeasible Reasoning with Logic Programming},
  year		= {2000},
  booktitle	= {Proceedings of the second German-Argentinean Kickoff
		  Workshop on Information Technology, K\"{o}nigswinter, March
		  1999},
  pages		= {39--46},
  editor	= {Stefan J\"{a}hnichen and Irene Loiseau}
}