@inproceedings{PulmanInteracting,
  title = "Interacting with an intelligent planning system using English sentences",
  author = "B. Crabtree and R. Crouch and D. Moffat and N. Pirie and G. Ritchie and S. G. Pulman and A. Tate",
  year = "1990",
  booktitle = "Proceedings of Conference on Expert Planning Systems, Brighton, UK.",
  pages = "169--174",
  publisher = "{American Association for Artificial Intelligence, and Institute of Electrical Engineers}",
}