@inproceedings{ijcai1987p91,
  title     = {The Completeness of a Natural System for Reasoning with Time Intervals},
  author    = {Ladkin, Peter B.},
  booktitle = {Proceedings of the Tenth International Joint Conference on
               Artificial Intelligence, {IJCAI-87}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {John McDermott},
  pages     = {462--464},
  year      = {1987},
  note      = {Knowledge Representation},
  url       = {https://ijcai.org/proceedings/1987/91},
}