@inproceedings{ijcai2007p42,
  title     = {EQL-Lite: Effective First-Order Query Processing in Description Logics},
  author    = {Calvanese, Diego and De Giacomo, Giuseppe and Lembo, Domenico and Lenzerini, Maurizio and Rosati, Riccardo},
  booktitle = {Proceedings of the Twentieth International Joint Conference on
               Artificial Intelligence, {IJCAI-07}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Ramon López de Mántaras},
  pages     = {274--278},
  year      = {2007},
  url       = {https://ijcai.org/proceedings/2007/42},
}