@inproceedings{ijcai2013p176,
  title     = {Transition Constraints: A Study on the Computational Complexity of Qualitative Change},
  author    = {Westphal, Matthias and Hué, Julien and Wölfl, Stefan and Nebel, Bernhard},
  booktitle = {Proceedings of the Twenty-Third International Joint Conference on
               Artificial Intelligence, {IJCAI-13}},
  publisher = {AAAI Press / International Joint Conferences on Artificial Intelligence},
  editor    = {Francesca Rossi},
  pages     = {1169--1174},
  year      = {2013},
  month     = {8},
  url       = {https://ijcai.org/proceedings/2013/176},
}