@inproceedings{Daniel-etal99,
  author	= {Daniel, Brent H. and Bares, W. and Callaway, Charles B. and Lester, James C.},
  title		= {Student-sensitive multimodal explanation generation for 3D learning environments},
  booktitle	= {Proceedings of the Sixteenth National Conference on Artificial Intelligence},
  year		= {1998},
}