@InProceedings{lambert:1991:ACL,
  author    = {Lynn Lambert},
  title     = {Modifying Beliefs in a Plan-Based Dialogue Model},
  booktitle = {Proceedings of the 29th Annual Meeting of the Association for Computational Linguistics},
  month     = {June},
  year      = {1991},
  address   = {Berkeley, California, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {349--350},
  url       = {http://www.aclweb.org/anthology/P91-1052},
  doi       = {10.3115/981344.981397}
}