Semantics and Expressive Power of Subqueries and Aggregates in SPARQL 1.1.

@inproceedings{kaminski-2016-semantics, author = {Mark Kaminski and Egor V. Kostylev and Bernardo Cuenca Grau}, editor = {Jacqueline Bourdeau and James A. Hendler and Roger Nkambou and Ian Horrocks and Ben Y. Zhao}, title = {{Semantics and Expressive Power of Subqueries and Aggregates in SPARQL 1.1}}, booktitle = {{Proceedings of the 25th International Conference on World Wide Web, WWW 2016, Montreal, Canada, April 11 - 15, 2016}}, pages = {227--238}, publisher = {ACM}, year = {2016}, url = {https://doi.org/10.1145/2872427.2883022}, doi = {https://doi.org/10.1145/2872427.2883022} }