@InProceedings{	  mantel.sudbrock:increasing,
  author	= {Heiko Mantel and Henning Sudbrock},
  title		= {Increasing the Precision of the Combining Calculus
		  (Extended Abstract)},
  booktitle	= {Proceedings of the 5th International Workshop on
		  Programming Language Interference and Dependence (PLID)},
  year		= 2009
}