X. Liu, C. Thomsen, and T. Pedersen. Information Systems, 36 (4):
765 - 781(2011)Selected Papers from the 2nd International Workshop on Similarity Search and Applications SISAP 2009.
G. Fletcher, and P. Beck. CIKM '09: Proceeding of the 18th ACM conference on Information and knowledge management, page 1513--1516. New York, NY, USA, ACM, (2009)
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.".