Camilo Thorne, Diego Calvanese. Controlled Aggregate Tree Shaped Questions over Ontologies. In Troels Andreasen, Ronald R. Yager, Henrik Bulskov, Henning Christiansen, Henrik Legind Larsen, editors, Flexible Query Answering Systems, 8th International Conference, FQAS 2009, Roskilde, Denmark, October 26-28, 2009. Proceedings. Volume 5822 of Lecture Notes in Computer Science, pages 394-405, Springer, 2009. [doi]
Abstract is missing.