@inproceedings{ijcai1997p211,
  title     = {Towards a Complete Classification of Tractability in Allen's Algebra},
  author    = {Drakengren, Thomas and Jonsson, Peter},
  booktitle = {Proceedings of the Fifteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-97}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Martha E. Pollack},
  pages     = {1466--1474},
  year      = {1997},
  note      = {Temporal Reasoning},
  url       = {https://ijcai.org/proceedings/1997/211},
}