@inproceedings{Towns-etal98,
  author	= {Towns, S. and Callaway, Charles B. and Lester, James C.},
  title		= {Generating co-ordinated natural language and 3D animations for complex spatial explanations},
  booktitle	= {Proceedings of the Fifteenth National Conference on Artificial Intelligence},
  pages		= {112--119},
  year		= {1998}
}