@inproceedings{ijcai2009p257,
  title     = {Improving a Virtual Human Using a Model of Degrees of Grounding},
  author    = {Roque, Antonio and Traum, David R.},
  booktitle = {Proceedings of the Twenty-First International Joint Conference on
               Artificial Intelligence, {IJCAI-09}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Hiroaki Kitano},
  pages     = {1537--1541},
  year      = {2009},
  url       = {https://ijcai.org/proceedings/2009/257},
}