@inproceedings{DBLP:conf/www/StefanoniMK18,
  title = "Estimating the Cardinality of Conjunctive Queries over {RDF} Data Using Graph Summarisation",
  author = "Giorgio Stefanoni and Boris Motik and Egor V. Kostylev",
  year = "2018",
  booktitle = "Proceedings of the 2018 World Wide Web Conference on World Wide Web, {WWW} 2018, Lyon, France, April 23-27, 2018",
  pages = "1043--1052",
  url = "http://doi.acm.org/10.1145/3178876.3186003",
  doi = "10.1145/3178876.3186003",
}
@phdthesis{PhDThesis,
  title = "Evaluating Conjunctive and Graph Queries over the EL Profile of OWL 2",
  author = "Giorgio Stefanoni",
  year = "2015",
  institution = "University of Oxford",
}
@inproceedings{IJCAI2015,
  title = "The Combined Approach to Query Answering Beyond the OWL 2 Profiles",
  author = "Feier, Cristina and  Carral, David and  Stefanoni, Giorgio and Cuenca Grau, Bernardo and Horrocks, Ian",
  year = "2015",
}
@inproceedings{Stefanoni2015,
  title = "Answering conjunctive queries over EL knowledge bases with transitive and reflexive roles",
  author = "Stefanoni, Giorgio and Motik, Boris",
  year = "2015",
  booktitle = "Proceeding of the Twenty-Ninth AAAI Conference in Artificial Intelligence",
}
@article{Stefanoni2014,
  title = "The Complexity of Answering Conjunctive and Navigational Queries over OWL 2 EL Knowledge Bases",
  author = "Stefanoni, Giorgio and Motik, Boris and Kr\"{o}tzsch, Markus and Rudolph, Sebastian",
  year = "2014",
  journal = "J. Artif. Intell. Res.",
  pages = "645--705",
  volume = "51",
}
@article{Calvanese2013,
  title = "Reasoning about Explanations for Negative Query Answers in DL-Lite",
  author = "Calvanese, Diego and Ortiz, Magdalena and Simkus, Mantas and Stefanoni, Giorgio",
  year = "2013",
  journal = "J. Artif. Intell. Res.",
  pages = "635--669",
  volume = "48",
}
@inproceedings{Stefanoni2013a,
  title = "Introducing Nominals to the Combined Query Answering Approaches for EL",
  author = "Stefanoni, Giorgio and Motik, Boris and Horrocks, Ian",
  year = "2013",
  booktitle = "Proceedings of the Twenty-Seventh AAAI Conference in Artificial Intelligence",
  keywords = "Special Track on Artificial Intelligence and the W",
  publisher = "AAAI Press",
}
@inproceedings{DBLP:conf/dlog/StefanoniMH12,
  title = "Small Datalog Query Rewritings for EL",
  author = "Giorgio Stefanoni and Boris Motik and Ian Horrocks",
  year = "2012",
  booktitle = "Proceedings of the 2012 International Workshop on Description Logics",
}
@inproceedings{Calvanese2012,
  title = "The Complexity of Explaining Negative Query Answers in DL-Lite",
  author = "Calvanese, Diego and Ortiz, Magdalena and Simkus, Mantas and Stefanoni, Giorgio",
  year = "2012",
  booktitle = "Principles of Knowledge Representation and Reasoning",
  publisher = "AAAI Press",
}
@mastersthesis{masterThesis,
  title = "Explaining Query Answers in Lightweight Ontologies: The DL-Lite Case",
  author = "Giorgio Stefanoni",
  year = "2011",
}
@inproceedings{DBLP:conf/dlog/CalvaneseOSS11,
  title = "The Complexity of Conjunctive Query Abduction in DL-Lite",
  author = "Diego Calvanese and Magdalena Ortiz and Mantas Simkus and Giorgio Stefanoni",
  year = "2011",
  booktitle = "Proceedings of the 24th International Workshop on Description Logics",
  url = "http://ceur-ws.org/Vol-745/paper_49.pdf",
}
@inproceedings{DBLP:conf/sac/CalvaneseKNRS10,
  title = "Web-based graphical querying of databases through an ontology: the Wonder system",
  author = "Diego Calvanese and C. Maria Keet and Werner Nutt and Mariano Rodriguez-Muro and Giorgio Stefanoni",
  year = "2010",
  booktitle = "SAC",
  pages = "1388-1395",
}