Mark Kaminski, Egor V. Kostylev, Bernardo Cuenca Grau. Semantics and Expressive Power of Subqueries and Aggregates in SPARQL 1.1. In Jacqueline Bourdeau, Jim Hendler, Roger Nkambou, Ian Horrocks, Ben Y. Zhao, editors, Proceedings of the 25th International Conference on World Wide Web, WWW 2016, Montreal, Canada, April 11 - 15, 2016. pages 227-238, ACM, 2016. [doi]
Abstract is missing.