@inproceedings{PulmanBidirectional,
  title = "Bidirectional Interpretation of Tense and Aspect",
  author = "J. Thomas and S. G. Pulman",
  year = "1999",
  booktitle = "{Proceedings of the Third International Workshop on Computational Semantics, Tilburg}",
  editor = "H. Bunt et al",
  pages = "247--263",
}