@article{journals/ws/KostylevR15,
  title = "Complexity of answering counting aggregate queries over {DL-Lite}",
  author = "Egor V. Kostylev and Juan L. Reutter",
  year = "2015",
  journal = "Journal of Web Semantics: Science, Services and Agents on the World Wide Web (JWS)",
  number = "1",
  pages = "94--111",
  volume = "33",
}