Mario Alviano, Andreas Pieris. Default Negation for Non-Guarded Existential Rules. In Tova Milo, Diego Calvanese, editors, Proceedings of the 34th ACM Symposium on Principles of Database Systems, PODS 2015, Melbourne, Victoria, Australia, May 31 - June 4, 2015. pages 79-90, ACM, 2015. [doi]
Abstract is missing.