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Bienvenu, Meghyn, Kikot, Stanislav, Kontchakov, Roman, Podolskii, Vladimir, Ryzhikov, Vladislav and Zakharyaschev, Michael (2017) The complexity of ontology-based data access with OWL 2 QL and bounded treewidth queries. In: PODS 2017, 14-19 May 2017, Chicago, Illinois, United States.