- Nick Bassiliades, Guido Governatori, Adrian Paschke, editors, Rule-Based Reasoning, Programming, and Applications - 5th International Symposium, RuleML 2011 - Europe, Barcelona, Spain, July 19-21, 2011. Proceedings. Volume 6826 of Lecture Notes in Computer Science, Springer, 2011.
- Stefano Bragaglia, Carlos Viegas Damásio, Marco Montali, Alun D. Preece, Charles J. Petrie, Mark Proctor, Umberto Straccia, editors, Proceedings of the 5th International RuleML2011@BRF Challenge, co-located with the 5th International Rule Symposium, Fort Lauderdale, Florida, USA, November 3-5, 2011. Volume 799 of CEUR Workshop Proceedings, CEUR-WS.org, 2011.
- Frank Olken, Monica Palmirani, Davide Sottara, editors, Rule-Based Modeling and Computing on the Semantic Web, 5th International Symposium, RuleML 2011- America, Ft. Lauderdale, FL, Florida, USA, November 3-5, 2011. Proceedings. Volume 7018 of Lecture Notes in Computer Science, Springer, 2011.