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Number of items: 2.
Hernich, A, Lemos, J and Wolter, F
(2016)
Constraint patterns for tractable ontology-mediated queries with datatypes.
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Bienvenu, M, Hansen, P, Lutz, C and Wolter, F
(2016)
First order-rewritability and containment of conjunctive queries in horn description logics.
In: IJCAI, 2016-7-10 - 2016-7-20, New York.