J. Noll, S. Alam, and M. Chowdhury. Proceedings of the 2008 The Fourth International Conference on Wireless and Mobile Communications, page 137--143. Washington, DC, USA, IEEE Computer Society, (2008)
M. Dowman, V. Tablan, H. Cunningham, and B. Popov. Proceedings of the 14th International World Wide Web Conference, Chiba, Japan, (2005)http://gate.ac.uk/sale/www05/web-assisted-annotation.pdf
http://prestospace.org/training/images/WWW05.pdf.
K. Cheung, H. Frost, M. Marshall, E. Prud'hommeaux, M. Samwald, J. Zhao, and A. Paschke. BMC Bioinformatics, (2009)"We have explored a tool called "FeDeRate", which enables a global SPARQL query to be decomposed into subqueries against the remote databases offering either SPARQL or SQL query interfaces.".