@incollection{Sprenger93,
  author	= {Sprenger, Michael},
  editor	= {Horacek, H. and Zock, M.},
  year		= {1993},
  title		= {Explanation strategies for KADS-based expert systems},
  booktitle	= {New concepts in Natural Language Generation: planning, realization, systems.},
  pages		= {27--56},
  publisher	= {Pinter},
  address	= {London},
}