@inproceedings{Nirenburg-etal89,
  author	= {Nirenburg, S. and Lesser, V. and Nyberg, E.},
  year		= {1989},
  title		= {Controlling a language generation planner},
  booktitle	= {Proceedings of the 11th. International Joint Conference on Artificial Intelligence},
  pages		= {1524--1530}
}