@inproceedings{conf/rr/GutierrezBasultoIGKK13,
  title = "Conjunctive queries with negation over {DL-Lite}: a closer look",
  author = "V{\'{\i}}ctor Guti{\'{e}}rrez{-}Basulto and Yazmin Ang{\'{e}}lica Ib{\'{a}}{\~{n}}ez{-}Garc{\'{\i}}a and Roman Kontchakov and Egor V. Kosty\-lev",
  year = "2013",
  booktitle = "Proceedings of the 7th International Conference on Web Reasoning and Rule Systems ({RR} 2013), Mannheim, Germany, July 27-29, 2013",
  pages = "109--122",
  publisher = "Springer",
}