@inproceedings{ijcai2016p192,
  title     = {Expressive Completeness of Existential Rule Languages for Ontology-Based Query Answering},
  author    = {Zhang, Heng and Zhang, Yan and You, Jia-Huai},
  booktitle = {Proceedings of the Twenty-Fifth International Joint Conference on
               Artificial Intelligence, {IJCAI-16}},
  publisher = {AAAI Press / International Joint Conferences on Artificial Intelligence},
  editor    = {Subbarao Kambhampati},
  pages     = {1330--1336},
  year      = {2016},
  month     = {7},
  url       = {https://ijcai.org/proceedings/2016/192},
}