J. F. Baget, O. Corby, R. Dieng-kuntz, C. Faron-zucker, F. Gandon et al., Griwes: Generic Model and Preliminary Specifications for a Graph-Based Knowledge Representation Toolkit, Intl Conf. on Conceptual Structures, ICCS'08, pp.297-310, 2008.
DOI : 10.1007/978-3-540-70596-3_21
URL : https://hal.archives-ouvertes.fr/lirmm-00389753

J. F. Baget and M. L. Mugnier, Extensions of Simple Conceptual Graphs: the Complexity of Rules and Constraints, J. Artif. Intell. Res. (JAIR), vol.16, pp.425-465, 2002.
URL : https://hal.archives-ouvertes.fr/lirmm-00268460

C. Bizer and R. Cyganiak, D2rq -lessons learned, 2007.

M. Chein and M. L. Mugnier, Graph-based Knowledge Representation: Computational Foundations of Conceptual Graphs, 2009.
URL : https://hal.archives-ouvertes.fr/lirmm-00355336

O. Corby and C. Faron-zucker, The KGRAM Abstract Machine for Knowledge Graph Querying, 2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology, 2010.
DOI : 10.1109/WI-IAT.2010.144

O. Görlitz and S. Staab, SPLENDID: SPARQL Endpoint Federation Exploiting VOID Descriptions, Intl Workshop on Consuming Linked Data, 2011.

B. Mcbride, Jena: a semantic Web toolkit, IEEE Internet Computing, vol.6, issue.6, pp.55-59, 2002.
DOI : 10.1109/MIC.2002.1067737

B. Quilitz and U. Leser, Querying distributed rdf data sources with sparql. The Semantic Web Research and Applications, pp.524-538, 2008.

A. Schwarte, P. Haase, K. Hose, R. Schenkel, and M. Schmidt, Fedx: optimization techniques for federated query processing on linked data. Intl Semantic Web Conf, pp.601-616, 2011.