@InProceedings{CD+07, Author = "Calvanese, D. and De Giacomo, G. and Lembo, D. and Lenzerini, M. and Rosati, R.", Year = "2007", Title = "{EQL-Lite: Effective First-Order Query Processing in Description Logics}", Editor = "Velosco, M.", BookTitle = "{Proceedings of the 20th International Joint Conference on Artificial Intelligence}", Place = "Hyderabad, India", Pages = "274-279", Comment = "TPTPRef" }