Darko Anicic Sebastian Rudolph Paul Fodor Nenad Stojanovic Retractable Complex Event Processing and Stream Reasoning. 122-137 2011 RuleML Europe https://doi.org/10.1007/978-3-642-22546-8_11 https://www.wikidata.org/entity/Q54824474 conf/ruleml/2011e db/conf/ruleml/ruleml2011e.html#AnicicRFS11