1. Distributed RDF Query Answering with Dynamic Data Exchange;Potter,2016
2. P.J. Hayes, P.F. Patel-Schneider, (2014) RDF 1.1 Semantics. W3C Recommendation, February 2014, World Wide Web Consortium. Retrieved from https://www.w3.org/TR/2014/REC-rdf11-mt-20140225.
3. Distributed query processing in the presence of blank nodes;Stolpe;Semant. Web,2017
4. Incomplete data: what went wrong, and how to fix it;Libkin,2014
5. Certain answers as objects and knowledge;Libkin;Artificial Intelligence,2016