@inproceedings{conf/aaai/KostylevR13,
  title = "Answering counting aggregate queries over ontologies of the {DL-Lite} family",
  author = "Egor V. Kostylev and Juan L. Reutter",
  year = "2013",
  booktitle = "Proceedings of the 27th {AAAI} Conference on Artificial Intelligence (AAAI 2013), Bellevue, Washington, {USA}, July 14-18, 2013",
  pages = "534--540",
  publisher = "{AAAI} Press",
}