Marco Console, Paolo Guagliardo, Leonid Libkin. On Querying Incomplete Information in Databases under Bag Semantics. In Carles Sierra, editor, Proceedings of the Twenty-Sixth International Joint Conference on Artificial Intelligence, IJCAI 2017, Melbourne, Australia, August 19-25, 2017. pages 993-999, ijcai.org, 2017. [doi]
Abstract is missing.